From 3d1f1491b457b6a17177b8d7628feac6b87e64e9 Mon Sep 17 00:00:00 2001
From: ghostbuster91 <kghost0@gmail.com>
Date: Mon, 11 Oct 2021 21:48:26 +0200
Subject: [PATCH 1/7] Create HTMLOptionsCollection to improve ux when dealing
 with <select><option>

---
 api-reports/2_12.txt                          |  6 ++++-
 api-reports/2_13.txt                          |  6 ++++-
 .../scalajs/dom/HTMLOptionsCollection.scala   | 26 +++++++++++++++++++
 .../org/scalajs/dom/HTMLSelectElement.scala   |  2 +-
 4 files changed, 37 insertions(+), 3 deletions(-)
 create mode 100644 src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala

diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index c6b96420f..4d6626e48 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -9187,6 +9187,10 @@ HTMLOptionElement[JC] var text: String
 HTMLOptionElement[JC] var textContent: String
 HTMLOptionElement[JC] var title: String
 HTMLOptionElement[JC] var value: String
+HTMLOptionsCollection[JC] @JSBracketAccess def apply(index: Int): T
+HTMLOptionsCollection[JC] def item(index: Int): HTMLOptionElement
+HTMLOptionsCollection[JC] def length: Int
+HTMLOptionsCollection[JC] def namedItem(name: String): HTMLOptionElement
 HTMLParagraphElement[JC] var accessKey: String
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
@@ -10552,7 +10556,7 @@ HTMLSelectElement[JC] var ontimeupdate: js.Function1[Event, _]
 HTMLSelectElement[JC] var onvolumechange: js.Function1[Event, _]
 HTMLSelectElement[JC] var onwaiting: js.Function1[Event, _]
 HTMLSelectElement[JC] var onwheel: js.Function1[WheelEvent, _]
-HTMLSelectElement[JC] val options: js.Array[HTMLOptionElement]
+HTMLSelectElement[JC] val options: HTMLOptionsCollection
 HTMLSelectElement[JC] var outerHTML: String
 HTMLSelectElement[JC] def ownerDocument: Document
 HTMLSelectElement[JC] override def ownerDocument: HTMLDocument
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index c6b96420f..4d6626e48 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -9187,6 +9187,10 @@ HTMLOptionElement[JC] var text: String
 HTMLOptionElement[JC] var textContent: String
 HTMLOptionElement[JC] var title: String
 HTMLOptionElement[JC] var value: String
+HTMLOptionsCollection[JC] @JSBracketAccess def apply(index: Int): T
+HTMLOptionsCollection[JC] def item(index: Int): HTMLOptionElement
+HTMLOptionsCollection[JC] def length: Int
+HTMLOptionsCollection[JC] def namedItem(name: String): HTMLOptionElement
 HTMLParagraphElement[JC] var accessKey: String
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
@@ -10552,7 +10556,7 @@ HTMLSelectElement[JC] var ontimeupdate: js.Function1[Event, _]
 HTMLSelectElement[JC] var onvolumechange: js.Function1[Event, _]
 HTMLSelectElement[JC] var onwaiting: js.Function1[Event, _]
 HTMLSelectElement[JC] var onwheel: js.Function1[WheelEvent, _]
-HTMLSelectElement[JC] val options: js.Array[HTMLOptionElement]
+HTMLSelectElement[JC] val options: HTMLOptionsCollection
 HTMLSelectElement[JC] var outerHTML: String
 HTMLSelectElement[JC] def ownerDocument: Document
 HTMLSelectElement[JC] override def ownerDocument: HTMLDocument
diff --git a/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala b/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
new file mode 100644
index 000000000..8ca82c78c
--- /dev/null
+++ b/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
@@ -0,0 +1,26 @@
+/** All documentation for facades is thanks to Mozilla Contributors at https://developer.mozilla.org/en-US/docs/Web/API
+  * and available under the Creative Commons Attribution-ShareAlike v2.5 or later.
+  * http://creativecommons.org/licenses/by-sa/2.5/
+  *
+  * Everything else is under the MIT License http://opensource.org/licenses/MIT
+  */
+package org.scalajs.dom
+
+import scala.scalajs.js
+import scala.scalajs.js.annotation._
+
+/** The HTMLOptionsCollection interface represents a collection of <option> HTML elements (in document order) and offers
+  * methods and properties for selecting from the list as well as optionally altering its items. This object is returned
+  * only by the options property of select.
+  */
+@js.native
+@JSGlobal
+class HTMLOptionsCollection private[this] () extends DOMList[HTMLOptionElement] {
+  def item(index: Int): HTMLOptionElement = js.native
+
+  /** Returns the specific node whose ID or, as a fallback, name matches the string specified by name. Matching by name
+    * is only done as a last resort, only in HTML, and only if the referenced element supports the name attribute.
+    * Returns null if no node exists by the given name.
+    */
+  def namedItem(name: String): HTMLOptionElement = js.native
+}
diff --git a/src/main/scala/org/scalajs/dom/HTMLSelectElement.scala b/src/main/scala/org/scalajs/dom/HTMLSelectElement.scala
index 2acc9ea84..caa9655e8 100644
--- a/src/main/scala/org/scalajs/dom/HTMLSelectElement.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLSelectElement.scala
@@ -17,7 +17,7 @@ import scala.scalajs.js.annotation._
 abstract class HTMLSelectElement extends HTMLElement {
 
   /** The set of &lt;option&gt; elements contained by this element. Read only. */
-  val options: js.Array[HTMLOptionElement] = js.native
+  val options: HTMLOptionsCollection = js.native
 
   /** The value of this form control, that is, of the first selected option. */
   var value: String = js.native

From 1b07261ec4d70c4b2146ecab234bad28aa5bb14c Mon Sep 17 00:00:00 2001
From: ghostbuster91 <kghost0@gmail.com>
Date: Wed, 13 Oct 2021 09:55:44 +0200
Subject: [PATCH 2/7] Rewrite HTMLOptionsCollection to extend HTMLCollection

---
 src/main/scala/org/scalajs/dom/HTMLCollection.scala        | 2 +-
 src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main/scala/org/scalajs/dom/HTMLCollection.scala b/src/main/scala/org/scalajs/dom/HTMLCollection.scala
index f04ccb48a..9f8ff5e05 100644
--- a/src/main/scala/org/scalajs/dom/HTMLCollection.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLCollection.scala
@@ -14,7 +14,7 @@ import scala.scalajs.js.annotation._
   */
 @js.native
 @JSGlobal
-class HTMLCollection private[this] () extends DOMList[Element] {
+abstract class HTMLCollection extends DOMList[Element] {
   def item(index: Int): Element = js.native
 
   /** Returns the specific node whose ID or, as a fallback, name matches the string specified by name. Matching by name
diff --git a/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala b/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
index 8ca82c78c..3eabeaead 100644
--- a/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
@@ -15,12 +15,12 @@ import scala.scalajs.js.annotation._
   */
 @js.native
 @JSGlobal
-class HTMLOptionsCollection private[this] () extends DOMList[HTMLOptionElement] {
-  def item(index: Int): HTMLOptionElement = js.native
+class HTMLOptionsCollection private[this] () extends HTMLCollection {
+  override def item(index: Int): HTMLOptionElement = js.native
 
   /** Returns the specific node whose ID or, as a fallback, name matches the string specified by name. Matching by name
     * is only done as a last resort, only in HTML, and only if the referenced element supports the name attribute.
     * Returns null if no node exists by the given name.
     */
-  def namedItem(name: String): HTMLOptionElement = js.native
+  override def namedItem(name: String): HTMLOptionElement = js.native
 }

From dd4b4afc9f808ed7028ca686f36e6abcaa683823 Mon Sep 17 00:00:00 2001
From: ghostbuster91 <kghost0@gmail.com>
Date: Wed, 13 Oct 2021 12:53:02 +0200
Subject: [PATCH 3/7] Parametrize HtmlCollection class with the type of the
 element

---
 api-reports/2_12.txt                          | 1006 ++++++++---------
 api-reports/2_13.txt                          | 1006 ++++++++---------
 src/main/scala/org/scalajs/dom/Document.scala |    6 +-
 src/main/scala/org/scalajs/dom/Element.scala  |    6 +-
 .../org/scalajs/dom/HTMLCollection.scala      |    6 +-
 .../org/scalajs/dom/HTMLDataListElement.scala |    2 +-
 .../scala/org/scalajs/dom/HTMLDocument.scala  |   12 +-
 .../org/scalajs/dom/HTMLFormElement.scala     |    2 +-
 .../scalajs/dom/HTMLOptionsCollection.scala   |   10 +-
 .../org/scalajs/dom/HTMLTableElement.scala    |    4 +-
 .../org/scalajs/dom/HTMLTableRowElement.scala |    2 +-
 .../scalajs/dom/HTMLTableSectionElement.scala |    2 +-
 .../scala/org/scalajs/dom/ParentNode.scala    |    2 +-
 src/main/scala/org/scalajs/dom/html.scala     |    2 +-
 src/main/scala/org/scalajs/dom/raw.scala      |    2 +-
 15 files changed, 1031 insertions(+), 1039 deletions(-)

diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index 4d6626e48..657c1755b 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -1311,7 +1311,7 @@ Document[JC] def baseURI: String
 Document[JC] def characterSet: String
 Document[JC] def childElementCount: Int
 Document[JC] def childNodes: NodeList[Node]
-Document[JC] def children: HTMLCollection
+Document[JC] def children: HTMLCollection[Element]
 Document[JC] def cloneNode(deep: Boolean?): Node
 Document[JC] def compareDocumentPosition(other: Node): Int
 Document[JC] def contains(otherNode: Node): Boolean
@@ -1344,10 +1344,10 @@ Document[JC] def firstElementChild: Element
 Document[JC] def fullscreenElement: Element
 Document[JC] def fullscreenEnabled: Boolean
 Document[JC] def getElementById(elementId: String): Element
-Document[JC] def getElementsByClassName(classNames: String): HTMLCollection
+Document[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
 Document[JC] def getElementsByName(elementName: String): NodeList[Node]
-Document[JC] def getElementsByTagName(name: String): HTMLCollection
-Document[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+Document[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+Document[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 Document[JC] def hasAttributes(): Boolean
 Document[JC] def hasChildNodes(): Boolean
 Document[JC] def hidden: Boolean
@@ -1544,7 +1544,7 @@ Element[JC] def baseURI: String
 Element[JC] def before(nodes: Node | String*): Unit
 Element[JC] def childElementCount: Int
 Element[JC] def childNodes: NodeList[Node]
-Element[JC] def children: HTMLCollection
+Element[JC] def children: HTMLCollection[Element]
 Element[JC] var classList: DOMTokenList
 Element[JC] def clientHeight: Int
 Element[JC] def clientLeft: Int
@@ -1562,9 +1562,9 @@ Element[JC] def getAttributeNode(name: String): Attr
 Element[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 Element[JC] def getBoundingClientRect(): DOMRect
 Element[JC] def getClientRects(): DOMRectList
-Element[JC] def getElementsByClassName(classNames: String): HTMLCollection
-Element[JC] def getElementsByTagName(name: String): HTMLCollection
-Element[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+Element[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+Element[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+Element[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 Element[JC] def hasAttribute(name: String): Boolean
 Element[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 Element[JC] def hasAttributes(): Boolean
@@ -1821,7 +1821,7 @@ HTMLAnchorElement[JC] def blur(): Unit
 HTMLAnchorElement[JC] var charset: String
 HTMLAnchorElement[JC] def childElementCount: Int
 HTMLAnchorElement[JC] def childNodes: NodeList[Node]
-HTMLAnchorElement[JC] def children: HTMLCollection
+HTMLAnchorElement[JC] def children: HTMLCollection[Element]
 HTMLAnchorElement[JC] var classList: DOMTokenList
 HTMLAnchorElement[JC] var className: String
 HTMLAnchorElement[JC] def click(): Unit
@@ -1848,9 +1848,9 @@ HTMLAnchorElement[JC] def getAttributeNode(name: String): Attr
 HTMLAnchorElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLAnchorElement[JC] def getBoundingClientRect(): DOMRect
 HTMLAnchorElement[JC] def getClientRects(): DOMRectList
-HTMLAnchorElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLAnchorElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLAnchorElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLAnchorElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLAnchorElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLAnchorElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLAnchorElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLAnchorElement[JC] def hasAttribute(name: String): Boolean
 HTMLAnchorElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2033,7 +2033,7 @@ HTMLAreaElement[JC] def before(nodes: Node | String*): Unit
 HTMLAreaElement[JC] def blur(): Unit
 HTMLAreaElement[JC] def childElementCount: Int
 HTMLAreaElement[JC] def childNodes: NodeList[Node]
-HTMLAreaElement[JC] def children: HTMLCollection
+HTMLAreaElement[JC] def children: HTMLCollection[Element]
 HTMLAreaElement[JC] var classList: DOMTokenList
 HTMLAreaElement[JC] var className: String
 HTMLAreaElement[JC] def click(): Unit
@@ -2061,9 +2061,9 @@ HTMLAreaElement[JC] def getAttributeNode(name: String): Attr
 HTMLAreaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLAreaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLAreaElement[JC] def getClientRects(): DOMRectList
-HTMLAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLAreaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLAreaElement[JC] def hasAttribute(name: String): Boolean
 HTMLAreaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2245,7 +2245,7 @@ HTMLAudioElement[JC] def buffered: TimeRanges
 HTMLAudioElement[JC] def canPlayType(`type`: String): String
 HTMLAudioElement[JC] def childElementCount: Int
 HTMLAudioElement[JC] def childNodes: NodeList[Node]
-HTMLAudioElement[JC] def children: HTMLCollection
+HTMLAudioElement[JC] def children: HTMLCollection[Element]
 HTMLAudioElement[JC] var classList: DOMTokenList
 HTMLAudioElement[JC] var className: String
 HTMLAudioElement[JC] def click(): Unit
@@ -2279,9 +2279,9 @@ HTMLAudioElement[JC] def getAttributeNode(name: String): Attr
 HTMLAudioElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLAudioElement[JC] def getBoundingClientRect(): DOMRect
 HTMLAudioElement[JC] def getClientRects(): DOMRectList
-HTMLAudioElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLAudioElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLAudioElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLAudioElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLAudioElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLAudioElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLAudioElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLAudioElement[JC] def hasAttribute(name: String): Boolean
 HTMLAudioElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2466,7 +2466,7 @@ HTMLBRElement[JC] def before(nodes: Node | String*): Unit
 HTMLBRElement[JC] def blur(): Unit
 HTMLBRElement[JC] def childElementCount: Int
 HTMLBRElement[JC] def childNodes: NodeList[Node]
-HTMLBRElement[JC] def children: HTMLCollection
+HTMLBRElement[JC] def children: HTMLCollection[Element]
 HTMLBRElement[JC] var classList: DOMTokenList
 HTMLBRElement[JC] var className: String
 HTMLBRElement[JC] def click(): Unit
@@ -2493,9 +2493,9 @@ HTMLBRElement[JC] def getAttributeNode(name: String): Attr
 HTMLBRElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLBRElement[JC] def getBoundingClientRect(): DOMRect
 HTMLBRElement[JC] def getClientRects(): DOMRectList
-HTMLBRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLBRElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLBRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLBRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLBRElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLBRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLBRElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLBRElement[JC] def hasAttribute(name: String): Boolean
 HTMLBRElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2663,7 +2663,7 @@ HTMLBaseElement[JC] def before(nodes: Node | String*): Unit
 HTMLBaseElement[JC] def blur(): Unit
 HTMLBaseElement[JC] def childElementCount: Int
 HTMLBaseElement[JC] def childNodes: NodeList[Node]
-HTMLBaseElement[JC] def children: HTMLCollection
+HTMLBaseElement[JC] def children: HTMLCollection[Element]
 HTMLBaseElement[JC] var classList: DOMTokenList
 HTMLBaseElement[JC] var className: String
 HTMLBaseElement[JC] def click(): Unit
@@ -2690,9 +2690,9 @@ HTMLBaseElement[JC] def getAttributeNode(name: String): Attr
 HTMLBaseElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLBaseElement[JC] def getBoundingClientRect(): DOMRect
 HTMLBaseElement[JC] def getClientRects(): DOMRectList
-HTMLBaseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLBaseElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLBaseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLBaseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLBaseElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLBaseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLBaseElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLBaseElement[JC] def hasAttribute(name: String): Boolean
 HTMLBaseElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2862,7 +2862,7 @@ HTMLBodyElement[JC] def before(nodes: Node | String*): Unit
 HTMLBodyElement[JC] def blur(): Unit
 HTMLBodyElement[JC] def childElementCount: Int
 HTMLBodyElement[JC] def childNodes: NodeList[Node]
-HTMLBodyElement[JC] def children: HTMLCollection
+HTMLBodyElement[JC] def children: HTMLCollection[Element]
 HTMLBodyElement[JC] var classList: DOMTokenList
 HTMLBodyElement[JC] var className: String
 HTMLBodyElement[JC] def click(): Unit
@@ -2889,9 +2889,9 @@ HTMLBodyElement[JC] def getAttributeNode(name: String): Attr
 HTMLBodyElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLBodyElement[JC] def getBoundingClientRect(): DOMRect
 HTMLBodyElement[JC] def getClientRects(): DOMRectList
-HTMLBodyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLBodyElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLBodyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLBodyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLBodyElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLBodyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLBodyElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLBodyElement[JC] def hasAttribute(name: String): Boolean
 HTMLBodyElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3075,7 +3075,7 @@ HTMLButtonElement[JC] def blur(): Unit
 HTMLButtonElement[JC] def checkValidity(): Boolean
 HTMLButtonElement[JC] def childElementCount: Int
 HTMLButtonElement[JC] def childNodes: NodeList[Node]
-HTMLButtonElement[JC] def children: HTMLCollection
+HTMLButtonElement[JC] def children: HTMLCollection[Element]
 HTMLButtonElement[JC] var classList: DOMTokenList
 HTMLButtonElement[JC] var className: String
 HTMLButtonElement[JC] def click(): Unit
@@ -3109,9 +3109,9 @@ HTMLButtonElement[JC] def getAttributeNode(name: String): Attr
 HTMLButtonElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLButtonElement[JC] def getBoundingClientRect(): DOMRect
 HTMLButtonElement[JC] def getClientRects(): DOMRectList
-HTMLButtonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLButtonElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLButtonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLButtonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLButtonElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLButtonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLButtonElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLButtonElement[JC] def hasAttribute(name: String): Boolean
 HTMLButtonElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3287,7 +3287,7 @@ HTMLCanvasElement[JC] def before(nodes: Node | String*): Unit
 HTMLCanvasElement[JC] def blur(): Unit
 HTMLCanvasElement[JC] def childElementCount: Int
 HTMLCanvasElement[JC] def childNodes: NodeList[Node]
-HTMLCanvasElement[JC] def children: HTMLCollection
+HTMLCanvasElement[JC] def children: HTMLCollection[Element]
 HTMLCanvasElement[JC] var classList: DOMTokenList
 HTMLCanvasElement[JC] var className: String
 HTMLCanvasElement[JC] def click(): Unit
@@ -3315,9 +3315,9 @@ HTMLCanvasElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: St
 HTMLCanvasElement[JC] def getBoundingClientRect(): DOMRect
 HTMLCanvasElement[JC] def getClientRects(): DOMRectList
 HTMLCanvasElement[JC] def getContext(contextId: String, args: js.Any*): js.Dynamic
-HTMLCanvasElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLCanvasElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLCanvasElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLCanvasElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLCanvasElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLCanvasElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLCanvasElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLCanvasElement[JC] def hasAttribute(name: String): Boolean
 HTMLCanvasElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3477,9 +3477,9 @@ HTMLCanvasElement[JC] var title: String
 HTMLCanvasElement[JC] def toDataURL(`type`: String, args: js.Any*): String
 HTMLCanvasElement[JC] var width: Int
 HTMLCollection[JC] @JSBracketAccess def apply(index: Int): T
-HTMLCollection[JC] def item(index: Int): Element
+HTMLCollection[JC] def item(index: Int): E
 HTMLCollection[JC] def length: Int
-HTMLCollection[JC] def namedItem(name: String): Element
+HTMLCollection[JC] def namedItem(name: String): E
 HTMLDListElement[JC] var accessKey: String
 HTMLDListElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLDListElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
@@ -3492,7 +3492,7 @@ HTMLDListElement[JC] def before(nodes: Node | String*): Unit
 HTMLDListElement[JC] def blur(): Unit
 HTMLDListElement[JC] def childElementCount: Int
 HTMLDListElement[JC] def childNodes: NodeList[Node]
-HTMLDListElement[JC] def children: HTMLCollection
+HTMLDListElement[JC] def children: HTMLCollection[Element]
 HTMLDListElement[JC] var classList: DOMTokenList
 HTMLDListElement[JC] var className: String
 HTMLDListElement[JC] def click(): Unit
@@ -3519,9 +3519,9 @@ HTMLDListElement[JC] def getAttributeNode(name: String): Attr
 HTMLDListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLDListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLDListElement[JC] def getClientRects(): DOMRectList
-HTMLDListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLDListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLDListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDListElement[JC] def hasAttribute(name: String): Boolean
 HTMLDListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3689,7 +3689,7 @@ HTMLDataListElement[JC] def before(nodes: Node | String*): Unit
 HTMLDataListElement[JC] def blur(): Unit
 HTMLDataListElement[JC] def childElementCount: Int
 HTMLDataListElement[JC] def childNodes: NodeList[Node]
-HTMLDataListElement[JC] def children: HTMLCollection
+HTMLDataListElement[JC] def children: HTMLCollection[Element]
 HTMLDataListElement[JC] var classList: DOMTokenList
 HTMLDataListElement[JC] var className: String
 HTMLDataListElement[JC] def click(): Unit
@@ -3716,9 +3716,9 @@ HTMLDataListElement[JC] def getAttributeNode(name: String): Attr
 HTMLDataListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLDataListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLDataListElement[JC] def getClientRects(): DOMRectList
-HTMLDataListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLDataListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDataListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDataListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLDataListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDataListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDataListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDataListElement[JC] def hasAttribute(name: String): Boolean
 HTMLDataListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3833,7 +3833,7 @@ HTMLDataListElement[JC] var ontimeupdate: js.Function1[Event, _]
 HTMLDataListElement[JC] var onvolumechange: js.Function1[Event, _]
 HTMLDataListElement[JC] var onwaiting: js.Function1[Event, _]
 HTMLDataListElement[JC] var onwheel: js.Function1[WheelEvent, _]
-HTMLDataListElement[JC] def options: HTMLCollection
+HTMLDataListElement[JC] def options: HTMLCollection[Element]
 HTMLDataListElement[JC] var outerHTML: String
 HTMLDataListElement[JC] def ownerDocument: Document
 HTMLDataListElement[JC] override def ownerDocument: HTMLDocument
@@ -3887,7 +3887,7 @@ HTMLDivElement[JC] def before(nodes: Node | String*): Unit
 HTMLDivElement[JC] def blur(): Unit
 HTMLDivElement[JC] def childElementCount: Int
 HTMLDivElement[JC] def childNodes: NodeList[Node]
-HTMLDivElement[JC] def children: HTMLCollection
+HTMLDivElement[JC] def children: HTMLCollection[Element]
 HTMLDivElement[JC] var classList: DOMTokenList
 HTMLDivElement[JC] var className: String
 HTMLDivElement[JC] def click(): Unit
@@ -3914,9 +3914,9 @@ HTMLDivElement[JC] def getAttributeNode(name: String): Attr
 HTMLDivElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLDivElement[JC] def getBoundingClientRect(): DOMRect
 HTMLDivElement[JC] def getClientRects(): DOMRectList
-HTMLDivElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLDivElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDivElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDivElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLDivElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDivElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDivElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDivElement[JC] def hasAttribute(name: String): Boolean
 HTMLDivElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -4077,7 +4077,7 @@ HTMLDocument[JC] def activeElement: Element
 HTMLDocument[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLDocument[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
 HTMLDocument[JC] def adoptNode(source: Node): Node
-HTMLDocument[JC] def anchors: HTMLCollection
+HTMLDocument[JC] def anchors: HTMLCollection[Element]
 HTMLDocument[JC] def appendChild(newChild: Node): Node
 HTMLDocument[JC] def attributes: NamedNodeMap
 HTMLDocument[JC] def baseURI: String
@@ -4085,7 +4085,7 @@ HTMLDocument[JC] var body: HTMLElement
 HTMLDocument[JC] def characterSet: String
 HTMLDocument[JC] def childElementCount: Int
 HTMLDocument[JC] def childNodes: NodeList[Node]
-HTMLDocument[JC] def children: HTMLCollection
+HTMLDocument[JC] def children: HTMLCollection[Element]
 HTMLDocument[JC] def cloneNode(deep: Boolean?): Node
 HTMLDocument[JC] def close(): Unit
 HTMLDocument[JC] def compareDocumentPosition(other: Node): Int
@@ -4116,7 +4116,7 @@ HTMLDocument[JC] def documentElement: Element
 HTMLDocument[JC] def documentURI: String
 HTMLDocument[JC] var domain: String
 HTMLDocument[JC] def elementFromPoint(x: Double, y: Double): Element
-HTMLDocument[JC] def embeds: HTMLCollection
+HTMLDocument[JC] def embeds: HTMLCollection[Element]
 HTMLDocument[JC] def evaluate(xpathExpression: String, contextNode: Node, namespaceResolver: XPathNSResolver, resultType: Int, result: XPathResult): XPathResult
 HTMLDocument[JC] def evaluate(xpathExpression: String, contextNode: Node, namespaceResolver: js.Function1[String, String], resultType: Int, result: XPathResult): XPathResult
 HTMLDocument[JC] def execCommand(commandId: String, showUI: Boolean?, value: js.Any?): Boolean
@@ -4127,14 +4127,14 @@ HTMLDocument[JC] def fireEvent(eventName: String, eventObj: js.Any?): Boolean
 HTMLDocument[JC] def firstChild: Node
 HTMLDocument[JC] def firstElementChild: Element
 HTMLDocument[JC] def focus(): Unit
-HTMLDocument[JC] def forms: HTMLCollection
+HTMLDocument[JC] def forms: HTMLCollection[Element]
 HTMLDocument[JC] def fullscreenElement: Element
 HTMLDocument[JC] def fullscreenEnabled: Boolean
 HTMLDocument[JC] def getElementById(elementId: String): Element
-HTMLDocument[JC] def getElementsByClassName(classNames: String): HTMLCollection
+HTMLDocument[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
 HTMLDocument[JC] def getElementsByName(elementName: String): NodeList[Node]
-HTMLDocument[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDocument[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDocument[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDocument[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDocument[JC] def getSelection(): Selection
 HTMLDocument[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDocument[JC] def hasAttributes(): Boolean
@@ -4142,7 +4142,7 @@ HTMLDocument[JC] def hasChildNodes(): Boolean
 HTMLDocument[JC] def hasFocus(): Boolean
 HTMLDocument[JC] def head: HTMLHeadElement
 HTMLDocument[JC] def hidden: Boolean
-HTMLDocument[JC] def images: HTMLCollection
+HTMLDocument[JC] def images: HTMLCollection[Element]
 HTMLDocument[JC] def implementation: DOMImplementation
 HTMLDocument[JC] def importNode(importedNode: Node, deep: Boolean): Node
 HTMLDocument[JC] var innerText: String
@@ -4155,7 +4155,7 @@ HTMLDocument[JC] def isSupported(feature: String, version: String): Boolean
 HTMLDocument[JC] def lastChild: Node
 HTMLDocument[JC] def lastElementChild: Element
 HTMLDocument[JC] def lastModified: String
-HTMLDocument[JC] def links: HTMLCollection
+HTMLDocument[JC] def links: HTMLCollection[Element]
 HTMLDocument[JC] def localName: String
 HTMLDocument[JC] var location: Location
 HTMLDocument[JC] def lookupNamespaceURI(prefix: String): String
@@ -4245,7 +4245,7 @@ HTMLDocument[JC] var onwheel: js.Function1[WheelEvent, _]
 HTMLDocument[JC] def open(url: String?, name: String?, features: String?, replace: Boolean?): js.Dynamic
 HTMLDocument[JC] def ownerDocument: Document
 HTMLDocument[JC] def parentNode: Node
-HTMLDocument[JC] def plugins: HTMLCollection
+HTMLDocument[JC] def plugins: HTMLCollection[Element]
 HTMLDocument[JC] def pointerLockElement: Element
 HTMLDocument[JC] def previousSibling: Node
 HTMLDocument[JC] def queryCommandEnabled(commandId: String): Boolean
@@ -4284,7 +4284,7 @@ HTMLElement[JC] def before(nodes: Node | String*): Unit
 HTMLElement[JC] def blur(): Unit
 HTMLElement[JC] def childElementCount: Int
 HTMLElement[JC] def childNodes: NodeList[Node]
-HTMLElement[JC] def children: HTMLCollection
+HTMLElement[JC] def children: HTMLCollection[Element]
 HTMLElement[JC] var classList: DOMTokenList
 HTMLElement[JC] var className: String
 HTMLElement[JC] def click(): Unit
@@ -4311,9 +4311,9 @@ HTMLElement[JC] def getAttributeNode(name: String): Attr
 HTMLElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLElement[JC] def getBoundingClientRect(): DOMRect
 HTMLElement[JC] def getClientRects(): DOMRectList
-HTMLElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLElement[JC] def hasAttribute(name: String): Boolean
 HTMLElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -4481,7 +4481,7 @@ HTMLEmbedElement[JC] def before(nodes: Node | String*): Unit
 HTMLEmbedElement[JC] def blur(): Unit
 HTMLEmbedElement[JC] def childElementCount: Int
 HTMLEmbedElement[JC] def childNodes: NodeList[Node]
-HTMLEmbedElement[JC] def children: HTMLCollection
+HTMLEmbedElement[JC] def children: HTMLCollection[Element]
 HTMLEmbedElement[JC] var classList: DOMTokenList
 HTMLEmbedElement[JC] var className: String
 HTMLEmbedElement[JC] def click(): Unit
@@ -4508,9 +4508,9 @@ HTMLEmbedElement[JC] def getAttributeNode(name: String): Attr
 HTMLEmbedElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLEmbedElement[JC] def getBoundingClientRect(): DOMRect
 HTMLEmbedElement[JC] def getClientRects(): DOMRectList
-HTMLEmbedElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLEmbedElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLEmbedElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLEmbedElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLEmbedElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLEmbedElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLEmbedElement[JC] def getSVGDocument(): Document
 HTMLEmbedElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLEmbedElement[JC] def hasAttribute(name: String): Boolean
@@ -4683,7 +4683,7 @@ HTMLFieldSetElement[JC] def blur(): Unit
 HTMLFieldSetElement[JC] def checkValidity(): Boolean
 HTMLFieldSetElement[JC] def childElementCount: Int
 HTMLFieldSetElement[JC] def childNodes: NodeList[Node]
-HTMLFieldSetElement[JC] def children: HTMLCollection
+HTMLFieldSetElement[JC] def children: HTMLCollection[Element]
 HTMLFieldSetElement[JC] var classList: DOMTokenList
 HTMLFieldSetElement[JC] var className: String
 HTMLFieldSetElement[JC] def click(): Unit
@@ -4712,9 +4712,9 @@ HTMLFieldSetElement[JC] def getAttributeNode(name: String): Attr
 HTMLFieldSetElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLFieldSetElement[JC] def getBoundingClientRect(): DOMRect
 HTMLFieldSetElement[JC] def getClientRects(): DOMRectList
-HTMLFieldSetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLFieldSetElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLFieldSetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLFieldSetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLFieldSetElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLFieldSetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLFieldSetElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLFieldSetElement[JC] def hasAttribute(name: String): Boolean
 HTMLFieldSetElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -4891,7 +4891,7 @@ HTMLFormElement[JC] def blur(): Unit
 HTMLFormElement[JC] def checkValidity(): Boolean
 HTMLFormElement[JC] def childElementCount: Int
 HTMLFormElement[JC] def childNodes: NodeList[Node]
-HTMLFormElement[JC] def children: HTMLCollection
+HTMLFormElement[JC] def children: HTMLCollection[Element]
 HTMLFormElement[JC] var classList: DOMTokenList
 HTMLFormElement[JC] var className: String
 HTMLFormElement[JC] def click(): Unit
@@ -4908,7 +4908,7 @@ HTMLFormElement[JC] def dataset: js.Dictionary[String]
 HTMLFormElement[JC] var dir: String
 HTMLFormElement[JC] def dispatchEvent(evt: Event): Boolean
 HTMLFormElement[JC] var draggable: Boolean
-HTMLFormElement[JC] def elements: HTMLCollection
+HTMLFormElement[JC] def elements: HTMLCollection[Element]
 HTMLFormElement[JC] var encoding: String
 HTMLFormElement[JC] var enctype: String
 HTMLFormElement[JC] var filters: Object
@@ -4921,9 +4921,9 @@ HTMLFormElement[JC] def getAttributeNode(name: String): Attr
 HTMLFormElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLFormElement[JC] def getBoundingClientRect(): DOMRect
 HTMLFormElement[JC] def getClientRects(): DOMRectList
-HTMLFormElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLFormElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLFormElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLFormElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLFormElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLFormElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLFormElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLFormElement[JC] def hasAttribute(name: String): Boolean
 HTMLFormElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5101,7 +5101,7 @@ HTMLHRElement[JC] def before(nodes: Node | String*): Unit
 HTMLHRElement[JC] def blur(): Unit
 HTMLHRElement[JC] def childElementCount: Int
 HTMLHRElement[JC] def childNodes: NodeList[Node]
-HTMLHRElement[JC] def children: HTMLCollection
+HTMLHRElement[JC] def children: HTMLCollection[Element]
 HTMLHRElement[JC] var classList: DOMTokenList
 HTMLHRElement[JC] var className: String
 HTMLHRElement[JC] def click(): Unit
@@ -5128,9 +5128,9 @@ HTMLHRElement[JC] def getAttributeNode(name: String): Attr
 HTMLHRElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHRElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHRElement[JC] def getClientRects(): DOMRectList
-HTMLHRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHRElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHRElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHRElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHRElement[JC] def hasAttribute(name: String): Boolean
 HTMLHRElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5298,7 +5298,7 @@ HTMLHeadElement[JC] def before(nodes: Node | String*): Unit
 HTMLHeadElement[JC] def blur(): Unit
 HTMLHeadElement[JC] def childElementCount: Int
 HTMLHeadElement[JC] def childNodes: NodeList[Node]
-HTMLHeadElement[JC] def children: HTMLCollection
+HTMLHeadElement[JC] def children: HTMLCollection[Element]
 HTMLHeadElement[JC] var classList: DOMTokenList
 HTMLHeadElement[JC] var className: String
 HTMLHeadElement[JC] def click(): Unit
@@ -5325,9 +5325,9 @@ HTMLHeadElement[JC] def getAttributeNode(name: String): Attr
 HTMLHeadElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHeadElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHeadElement[JC] def getClientRects(): DOMRectList
-HTMLHeadElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHeadElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHeadElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHeadElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHeadElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHeadElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHeadElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHeadElement[JC] def hasAttribute(name: String): Boolean
 HTMLHeadElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5495,7 +5495,7 @@ HTMLHeadingElement[JC] def before(nodes: Node | String*): Unit
 HTMLHeadingElement[JC] def blur(): Unit
 HTMLHeadingElement[JC] def childElementCount: Int
 HTMLHeadingElement[JC] def childNodes: NodeList[Node]
-HTMLHeadingElement[JC] def children: HTMLCollection
+HTMLHeadingElement[JC] def children: HTMLCollection[Element]
 HTMLHeadingElement[JC] var classList: DOMTokenList
 HTMLHeadingElement[JC] var className: String
 HTMLHeadingElement[JC] def click(): Unit
@@ -5522,9 +5522,9 @@ HTMLHeadingElement[JC] def getAttributeNode(name: String): Attr
 HTMLHeadingElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHeadingElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHeadingElement[JC] def getClientRects(): DOMRectList
-HTMLHeadingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHeadingElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHeadingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHeadingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHeadingElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHeadingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHeadingElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHeadingElement[JC] def hasAttribute(name: String): Boolean
 HTMLHeadingElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5692,7 +5692,7 @@ HTMLHtmlElement[JC] def before(nodes: Node | String*): Unit
 HTMLHtmlElement[JC] def blur(): Unit
 HTMLHtmlElement[JC] def childElementCount: Int
 HTMLHtmlElement[JC] def childNodes: NodeList[Node]
-HTMLHtmlElement[JC] def children: HTMLCollection
+HTMLHtmlElement[JC] def children: HTMLCollection[Element]
 HTMLHtmlElement[JC] var classList: DOMTokenList
 HTMLHtmlElement[JC] var className: String
 HTMLHtmlElement[JC] def click(): Unit
@@ -5719,9 +5719,9 @@ HTMLHtmlElement[JC] def getAttributeNode(name: String): Attr
 HTMLHtmlElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHtmlElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHtmlElement[JC] def getClientRects(): DOMRectList
-HTMLHtmlElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHtmlElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHtmlElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHtmlElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHtmlElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHtmlElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHtmlElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHtmlElement[JC] def hasAttribute(name: String): Boolean
 HTMLHtmlElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5890,7 +5890,7 @@ HTMLIFrameElement[JC] def blur(): Unit
 HTMLIFrameElement[JC] var border: String
 HTMLIFrameElement[JC] def childElementCount: Int
 HTMLIFrameElement[JC] def childNodes: NodeList[Node]
-HTMLIFrameElement[JC] def children: HTMLCollection
+HTMLIFrameElement[JC] def children: HTMLCollection[Element]
 HTMLIFrameElement[JC] var classList: DOMTokenList
 HTMLIFrameElement[JC] var className: String
 HTMLIFrameElement[JC] def click(): Unit
@@ -5919,9 +5919,9 @@ HTMLIFrameElement[JC] def getAttributeNode(name: String): Attr
 HTMLIFrameElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLIFrameElement[JC] def getBoundingClientRect(): DOMRect
 HTMLIFrameElement[JC] def getClientRects(): DOMRectList
-HTMLIFrameElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLIFrameElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLIFrameElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLIFrameElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLIFrameElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLIFrameElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLIFrameElement[JC] def getSVGDocument(): Document
 HTMLIFrameElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLIFrameElement[JC] def hasAttribute(name: String): Boolean
@@ -6098,7 +6098,7 @@ HTMLImageElement[JC] def before(nodes: Node | String*): Unit
 HTMLImageElement[JC] def blur(): Unit
 HTMLImageElement[JC] def childElementCount: Int
 HTMLImageElement[JC] def childNodes: NodeList[Node]
-HTMLImageElement[JC] def children: HTMLCollection
+HTMLImageElement[JC] def children: HTMLCollection[Element]
 HTMLImageElement[JC] var classList: DOMTokenList
 HTMLImageElement[JC] var className: String
 HTMLImageElement[JC] def click(): Unit
@@ -6126,9 +6126,9 @@ HTMLImageElement[JC] def getAttributeNode(name: String): Attr
 HTMLImageElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLImageElement[JC] def getBoundingClientRect(): DOMRect
 HTMLImageElement[JC] def getClientRects(): DOMRectList
-HTMLImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLImageElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLImageElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLImageElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLImageElement[JC] def hasAttribute(name: String): Boolean
 HTMLImageElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6311,7 +6311,7 @@ HTMLInputElement[JC] def checkValidity(): Boolean
 HTMLInputElement[JC] var checked: Boolean
 HTMLInputElement[JC] def childElementCount: Int
 HTMLInputElement[JC] def childNodes: NodeList[Node]
-HTMLInputElement[JC] def children: HTMLCollection
+HTMLInputElement[JC] def children: HTMLCollection[Element]
 HTMLInputElement[JC] var classList: DOMTokenList
 HTMLInputElement[JC] var className: String
 HTMLInputElement[JC] def click(): Unit
@@ -6348,9 +6348,9 @@ HTMLInputElement[JC] def getAttributeNode(name: String): Attr
 HTMLInputElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLInputElement[JC] def getBoundingClientRect(): DOMRect
 HTMLInputElement[JC] def getClientRects(): DOMRectList
-HTMLInputElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLInputElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLInputElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLInputElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLInputElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLInputElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLInputElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLInputElement[JC] def hasAttribute(name: String): Boolean
 HTMLInputElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6548,7 +6548,7 @@ HTMLLIElement[JC] def before(nodes: Node | String*): Unit
 HTMLLIElement[JC] def blur(): Unit
 HTMLLIElement[JC] def childElementCount: Int
 HTMLLIElement[JC] def childNodes: NodeList[Node]
-HTMLLIElement[JC] def children: HTMLCollection
+HTMLLIElement[JC] def children: HTMLCollection[Element]
 HTMLLIElement[JC] var classList: DOMTokenList
 HTMLLIElement[JC] var className: String
 HTMLLIElement[JC] def click(): Unit
@@ -6575,9 +6575,9 @@ HTMLLIElement[JC] def getAttributeNode(name: String): Attr
 HTMLLIElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLIElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLIElement[JC] def getClientRects(): DOMRectList
-HTMLLIElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLIElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLIElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLIElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLIElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLIElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLIElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLIElement[JC] def hasAttribute(name: String): Boolean
 HTMLLIElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6746,7 +6746,7 @@ HTMLLabelElement[JC] def before(nodes: Node | String*): Unit
 HTMLLabelElement[JC] def blur(): Unit
 HTMLLabelElement[JC] def childElementCount: Int
 HTMLLabelElement[JC] def childNodes: NodeList[Node]
-HTMLLabelElement[JC] def children: HTMLCollection
+HTMLLabelElement[JC] def children: HTMLCollection[Element]
 HTMLLabelElement[JC] var classList: DOMTokenList
 HTMLLabelElement[JC] var className: String
 HTMLLabelElement[JC] def click(): Unit
@@ -6774,9 +6774,9 @@ HTMLLabelElement[JC] def getAttributeNode(name: String): Attr
 HTMLLabelElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLabelElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLabelElement[JC] def getClientRects(): DOMRectList
-HTMLLabelElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLabelElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLabelElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLabelElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLabelElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLabelElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLabelElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLabelElement[JC] def hasAttribute(name: String): Boolean
 HTMLLabelElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6946,7 +6946,7 @@ HTMLLegendElement[JC] def before(nodes: Node | String*): Unit
 HTMLLegendElement[JC] def blur(): Unit
 HTMLLegendElement[JC] def childElementCount: Int
 HTMLLegendElement[JC] def childNodes: NodeList[Node]
-HTMLLegendElement[JC] def children: HTMLCollection
+HTMLLegendElement[JC] def children: HTMLCollection[Element]
 HTMLLegendElement[JC] var classList: DOMTokenList
 HTMLLegendElement[JC] var className: String
 HTMLLegendElement[JC] def click(): Unit
@@ -6974,9 +6974,9 @@ HTMLLegendElement[JC] def getAttributeNode(name: String): Attr
 HTMLLegendElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLegendElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLegendElement[JC] def getClientRects(): DOMRectList
-HTMLLegendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLegendElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLegendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLegendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLegendElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLegendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLegendElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLegendElement[JC] def hasAttribute(name: String): Boolean
 HTMLLegendElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7144,7 +7144,7 @@ HTMLLinkElement[JC] def before(nodes: Node | String*): Unit
 HTMLLinkElement[JC] def blur(): Unit
 HTMLLinkElement[JC] def childElementCount: Int
 HTMLLinkElement[JC] def childNodes: NodeList[Node]
-HTMLLinkElement[JC] def children: HTMLCollection
+HTMLLinkElement[JC] def children: HTMLCollection[Element]
 HTMLLinkElement[JC] var classList: DOMTokenList
 HTMLLinkElement[JC] var className: String
 HTMLLinkElement[JC] def click(): Unit
@@ -7171,9 +7171,9 @@ HTMLLinkElement[JC] def getAttributeNode(name: String): Attr
 HTMLLinkElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLinkElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLinkElement[JC] def getClientRects(): DOMRectList
-HTMLLinkElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLinkElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLinkElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLinkElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLinkElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLinkElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLinkElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLinkElement[JC] def hasAttribute(name: String): Boolean
 HTMLLinkElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7349,7 +7349,7 @@ HTMLMapElement[JC] def before(nodes: Node | String*): Unit
 HTMLMapElement[JC] def blur(): Unit
 HTMLMapElement[JC] def childElementCount: Int
 HTMLMapElement[JC] def childNodes: NodeList[Node]
-HTMLMapElement[JC] def children: HTMLCollection
+HTMLMapElement[JC] def children: HTMLCollection[Element]
 HTMLMapElement[JC] var classList: DOMTokenList
 HTMLMapElement[JC] var className: String
 HTMLMapElement[JC] def click(): Unit
@@ -7376,9 +7376,9 @@ HTMLMapElement[JC] def getAttributeNode(name: String): Attr
 HTMLMapElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMapElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMapElement[JC] def getClientRects(): DOMRectList
-HTMLMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMapElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMapElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMapElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMapElement[JC] def hasAttribute(name: String): Boolean
 HTMLMapElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7551,7 +7551,7 @@ HTMLMediaElement[JC] def buffered: TimeRanges
 HTMLMediaElement[JC] def canPlayType(`type`: String): String
 HTMLMediaElement[JC] def childElementCount: Int
 HTMLMediaElement[JC] def childNodes: NodeList[Node]
-HTMLMediaElement[JC] def children: HTMLCollection
+HTMLMediaElement[JC] def children: HTMLCollection[Element]
 HTMLMediaElement[JC] var classList: DOMTokenList
 HTMLMediaElement[JC] var className: String
 HTMLMediaElement[JC] def click(): Unit
@@ -7585,9 +7585,9 @@ HTMLMediaElement[JC] def getAttributeNode(name: String): Attr
 HTMLMediaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMediaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMediaElement[JC] def getClientRects(): DOMRectList
-HTMLMediaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMediaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMediaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMediaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMediaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMediaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMediaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMediaElement[JC] def hasAttribute(name: String): Boolean
 HTMLMediaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7781,7 +7781,7 @@ HTMLMenuElement[JC] def before(nodes: Node | String*): Unit
 HTMLMenuElement[JC] def blur(): Unit
 HTMLMenuElement[JC] def childElementCount: Int
 HTMLMenuElement[JC] def childNodes: NodeList[Node]
-HTMLMenuElement[JC] def children: HTMLCollection
+HTMLMenuElement[JC] def children: HTMLCollection[Element]
 HTMLMenuElement[JC] var classList: DOMTokenList
 HTMLMenuElement[JC] var className: String
 HTMLMenuElement[JC] def click(): Unit
@@ -7808,9 +7808,9 @@ HTMLMenuElement[JC] def getAttributeNode(name: String): Attr
 HTMLMenuElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMenuElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMenuElement[JC] def getClientRects(): DOMRectList
-HTMLMenuElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMenuElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMenuElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMenuElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMenuElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMenuElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMenuElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMenuElement[JC] def hasAttribute(name: String): Boolean
 HTMLMenuElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7980,7 +7980,7 @@ HTMLMetaElement[JC] def blur(): Unit
 HTMLMetaElement[JC] var charset: String
 HTMLMetaElement[JC] def childElementCount: Int
 HTMLMetaElement[JC] def childNodes: NodeList[Node]
-HTMLMetaElement[JC] def children: HTMLCollection
+HTMLMetaElement[JC] def children: HTMLCollection[Element]
 HTMLMetaElement[JC] var classList: DOMTokenList
 HTMLMetaElement[JC] var className: String
 HTMLMetaElement[JC] def click(): Unit
@@ -8008,9 +8008,9 @@ HTMLMetaElement[JC] def getAttributeNode(name: String): Attr
 HTMLMetaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMetaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMetaElement[JC] def getClientRects(): DOMRectList
-HTMLMetaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMetaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMetaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMetaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMetaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMetaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMetaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMetaElement[JC] def hasAttribute(name: String): Boolean
 HTMLMetaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8181,7 +8181,7 @@ HTMLModElement[JC] def before(nodes: Node | String*): Unit
 HTMLModElement[JC] def blur(): Unit
 HTMLModElement[JC] def childElementCount: Int
 HTMLModElement[JC] def childNodes: NodeList[Node]
-HTMLModElement[JC] def children: HTMLCollection
+HTMLModElement[JC] def children: HTMLCollection[Element]
 HTMLModElement[JC] var cite: String
 HTMLModElement[JC] var classList: DOMTokenList
 HTMLModElement[JC] var className: String
@@ -8210,9 +8210,9 @@ HTMLModElement[JC] def getAttributeNode(name: String): Attr
 HTMLModElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLModElement[JC] def getBoundingClientRect(): DOMRect
 HTMLModElement[JC] def getClientRects(): DOMRectList
-HTMLModElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLModElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLModElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLModElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLModElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLModElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLModElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLModElement[JC] def hasAttribute(name: String): Boolean
 HTMLModElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8380,7 +8380,7 @@ HTMLOListElement[JC] def before(nodes: Node | String*): Unit
 HTMLOListElement[JC] def blur(): Unit
 HTMLOListElement[JC] def childElementCount: Int
 HTMLOListElement[JC] def childNodes: NodeList[Node]
-HTMLOListElement[JC] def children: HTMLCollection
+HTMLOListElement[JC] def children: HTMLCollection[Element]
 HTMLOListElement[JC] var classList: DOMTokenList
 HTMLOListElement[JC] var className: String
 HTMLOListElement[JC] def click(): Unit
@@ -8407,9 +8407,9 @@ HTMLOListElement[JC] def getAttributeNode(name: String): Attr
 HTMLOListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLOListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLOListElement[JC] def getClientRects(): DOMRectList
-HTMLOListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLOListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLOListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLOListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLOListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLOListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLOListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLOListElement[JC] def hasAttribute(name: String): Boolean
 HTMLOListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8582,7 +8582,7 @@ HTMLObjectElement[JC] def blur(): Unit
 HTMLObjectElement[JC] def checkValidity(): Boolean
 HTMLObjectElement[JC] def childElementCount: Int
 HTMLObjectElement[JC] def childNodes: NodeList[Node]
-HTMLObjectElement[JC] def children: HTMLCollection
+HTMLObjectElement[JC] def children: HTMLCollection[Element]
 HTMLObjectElement[JC] var classList: DOMTokenList
 HTMLObjectElement[JC] var className: String
 HTMLObjectElement[JC] var classid: String
@@ -8613,9 +8613,9 @@ HTMLObjectElement[JC] def getAttributeNode(name: String): Attr
 HTMLObjectElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLObjectElement[JC] def getBoundingClientRect(): DOMRect
 HTMLObjectElement[JC] def getClientRects(): DOMRectList
-HTMLObjectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLObjectElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLObjectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLObjectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLObjectElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLObjectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLObjectElement[JC] def getSVGDocument(): Document
 HTMLObjectElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLObjectElement[JC] def hasAttribute(name: String): Boolean
@@ -8794,7 +8794,7 @@ HTMLOptGroupElement[JC] def before(nodes: Node | String*): Unit
 HTMLOptGroupElement[JC] def blur(): Unit
 HTMLOptGroupElement[JC] def childElementCount: Int
 HTMLOptGroupElement[JC] def childNodes: NodeList[Node]
-HTMLOptGroupElement[JC] def children: HTMLCollection
+HTMLOptGroupElement[JC] def children: HTMLCollection[Element]
 HTMLOptGroupElement[JC] var classList: DOMTokenList
 HTMLOptGroupElement[JC] var className: String
 HTMLOptGroupElement[JC] def click(): Unit
@@ -8822,9 +8822,9 @@ HTMLOptGroupElement[JC] def getAttributeNode(name: String): Attr
 HTMLOptGroupElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLOptGroupElement[JC] def getBoundingClientRect(): DOMRect
 HTMLOptGroupElement[JC] def getClientRects(): DOMRectList
-HTMLOptGroupElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLOptGroupElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLOptGroupElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLOptGroupElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLOptGroupElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLOptGroupElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLOptGroupElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLOptGroupElement[JC] def hasAttribute(name: String): Boolean
 HTMLOptGroupElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8993,7 +8993,7 @@ HTMLOptionElement[JC] def before(nodes: Node | String*): Unit
 HTMLOptionElement[JC] def blur(): Unit
 HTMLOptionElement[JC] def childElementCount: Int
 HTMLOptionElement[JC] def childNodes: NodeList[Node]
-HTMLOptionElement[JC] def children: HTMLCollection
+HTMLOptionElement[JC] def children: HTMLCollection[Element]
 HTMLOptionElement[JC] var classList: DOMTokenList
 HTMLOptionElement[JC] var className: String
 HTMLOptionElement[JC] def click(): Unit
@@ -9024,9 +9024,9 @@ HTMLOptionElement[JC] def getAttributeNode(name: String): Attr
 HTMLOptionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLOptionElement[JC] def getBoundingClientRect(): DOMRect
 HTMLOptionElement[JC] def getClientRects(): DOMRectList
-HTMLOptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLOptionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLOptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLOptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLOptionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLOptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLOptionElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLOptionElement[JC] def hasAttribute(name: String): Boolean
 HTMLOptionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9188,9 +9188,9 @@ HTMLOptionElement[JC] var textContent: String
 HTMLOptionElement[JC] var title: String
 HTMLOptionElement[JC] var value: String
 HTMLOptionsCollection[JC] @JSBracketAccess def apply(index: Int): T
-HTMLOptionsCollection[JC] def item(index: Int): HTMLOptionElement
+HTMLOptionsCollection[JC] def item(index: Int): E
 HTMLOptionsCollection[JC] def length: Int
-HTMLOptionsCollection[JC] def namedItem(name: String): HTMLOptionElement
+HTMLOptionsCollection[JC] def namedItem(name: String): E
 HTMLParagraphElement[JC] var accessKey: String
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
@@ -9203,7 +9203,7 @@ HTMLParagraphElement[JC] def before(nodes: Node | String*): Unit
 HTMLParagraphElement[JC] def blur(): Unit
 HTMLParagraphElement[JC] def childElementCount: Int
 HTMLParagraphElement[JC] def childNodes: NodeList[Node]
-HTMLParagraphElement[JC] def children: HTMLCollection
+HTMLParagraphElement[JC] def children: HTMLCollection[Element]
 HTMLParagraphElement[JC] var classList: DOMTokenList
 HTMLParagraphElement[JC] var className: String
 HTMLParagraphElement[JC] def click(): Unit
@@ -9230,9 +9230,9 @@ HTMLParagraphElement[JC] def getAttributeNode(name: String): Attr
 HTMLParagraphElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLParagraphElement[JC] def getBoundingClientRect(): DOMRect
 HTMLParagraphElement[JC] def getClientRects(): DOMRectList
-HTMLParagraphElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLParagraphElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLParagraphElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLParagraphElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLParagraphElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLParagraphElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLParagraphElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLParagraphElement[JC] def hasAttribute(name: String): Boolean
 HTMLParagraphElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9400,7 +9400,7 @@ HTMLParamElement[JC] def before(nodes: Node | String*): Unit
 HTMLParamElement[JC] def blur(): Unit
 HTMLParamElement[JC] def childElementCount: Int
 HTMLParamElement[JC] def childNodes: NodeList[Node]
-HTMLParamElement[JC] def children: HTMLCollection
+HTMLParamElement[JC] def children: HTMLCollection[Element]
 HTMLParamElement[JC] var classList: DOMTokenList
 HTMLParamElement[JC] var className: String
 HTMLParamElement[JC] def click(): Unit
@@ -9427,9 +9427,9 @@ HTMLParamElement[JC] def getAttributeNode(name: String): Attr
 HTMLParamElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLParamElement[JC] def getBoundingClientRect(): DOMRect
 HTMLParamElement[JC] def getClientRects(): DOMRectList
-HTMLParamElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLParamElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLParamElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLParamElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLParamElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLParamElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLParamElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLParamElement[JC] def hasAttribute(name: String): Boolean
 HTMLParamElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9599,7 +9599,7 @@ HTMLPreElement[JC] def before(nodes: Node | String*): Unit
 HTMLPreElement[JC] def blur(): Unit
 HTMLPreElement[JC] def childElementCount: Int
 HTMLPreElement[JC] def childNodes: NodeList[Node]
-HTMLPreElement[JC] def children: HTMLCollection
+HTMLPreElement[JC] def children: HTMLCollection[Element]
 HTMLPreElement[JC] var classList: DOMTokenList
 HTMLPreElement[JC] var className: String
 HTMLPreElement[JC] def click(): Unit
@@ -9626,9 +9626,9 @@ HTMLPreElement[JC] def getAttributeNode(name: String): Attr
 HTMLPreElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLPreElement[JC] def getBoundingClientRect(): DOMRect
 HTMLPreElement[JC] def getClientRects(): DOMRectList
-HTMLPreElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLPreElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLPreElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLPreElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLPreElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLPreElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLPreElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLPreElement[JC] def hasAttribute(name: String): Boolean
 HTMLPreElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9796,7 +9796,7 @@ HTMLProgressElement[JC] def before(nodes: Node | String*): Unit
 HTMLProgressElement[JC] def blur(): Unit
 HTMLProgressElement[JC] def childElementCount: Int
 HTMLProgressElement[JC] def childNodes: NodeList[Node]
-HTMLProgressElement[JC] def children: HTMLCollection
+HTMLProgressElement[JC] def children: HTMLCollection[Element]
 HTMLProgressElement[JC] var classList: DOMTokenList
 HTMLProgressElement[JC] var className: String
 HTMLProgressElement[JC] def click(): Unit
@@ -9824,9 +9824,9 @@ HTMLProgressElement[JC] def getAttributeNode(name: String): Attr
 HTMLProgressElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLProgressElement[JC] def getBoundingClientRect(): DOMRect
 HTMLProgressElement[JC] def getClientRects(): DOMRectList
-HTMLProgressElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLProgressElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLProgressElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLProgressElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLProgressElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLProgressElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLProgressElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLProgressElement[JC] def hasAttribute(name: String): Boolean
 HTMLProgressElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9997,7 +9997,7 @@ HTMLQuoteElement[JC] def before(nodes: Node | String*): Unit
 HTMLQuoteElement[JC] def blur(): Unit
 HTMLQuoteElement[JC] def childElementCount: Int
 HTMLQuoteElement[JC] def childNodes: NodeList[Node]
-HTMLQuoteElement[JC] def children: HTMLCollection
+HTMLQuoteElement[JC] def children: HTMLCollection[Element]
 HTMLQuoteElement[JC] var cite: String
 HTMLQuoteElement[JC] var classList: DOMTokenList
 HTMLQuoteElement[JC] var className: String
@@ -10026,9 +10026,9 @@ HTMLQuoteElement[JC] def getAttributeNode(name: String): Attr
 HTMLQuoteElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLQuoteElement[JC] def getBoundingClientRect(): DOMRect
 HTMLQuoteElement[JC] def getClientRects(): DOMRectList
-HTMLQuoteElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLQuoteElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLQuoteElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLQuoteElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLQuoteElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLQuoteElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLQuoteElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLQuoteElement[JC] def hasAttribute(name: String): Boolean
 HTMLQuoteElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10198,7 +10198,7 @@ HTMLScriptElement[JC] def blur(): Unit
 HTMLScriptElement[JC] var charset: String
 HTMLScriptElement[JC] def childElementCount: Int
 HTMLScriptElement[JC] def childNodes: NodeList[Node]
-HTMLScriptElement[JC] def children: HTMLCollection
+HTMLScriptElement[JC] def children: HTMLCollection[Element]
 HTMLScriptElement[JC] var classList: DOMTokenList
 HTMLScriptElement[JC] var className: String
 HTMLScriptElement[JC] def click(): Unit
@@ -10227,9 +10227,9 @@ HTMLScriptElement[JC] def getAttributeNode(name: String): Attr
 HTMLScriptElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLScriptElement[JC] def getBoundingClientRect(): DOMRect
 HTMLScriptElement[JC] def getClientRects(): DOMRectList
-HTMLScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLScriptElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLScriptElement[JC] def hasAttribute(name: String): Boolean
 HTMLScriptElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10405,7 +10405,7 @@ HTMLSelectElement[JC] def blur(): Unit
 HTMLSelectElement[JC] def checkValidity(): Boolean
 HTMLSelectElement[JC] def childElementCount: Int
 HTMLSelectElement[JC] def childNodes: NodeList[Node]
-HTMLSelectElement[JC] def children: HTMLCollection
+HTMLSelectElement[JC] def children: HTMLCollection[Element]
 HTMLSelectElement[JC] var classList: DOMTokenList
 HTMLSelectElement[JC] var className: String
 HTMLSelectElement[JC] def click(): Unit
@@ -10434,9 +10434,9 @@ HTMLSelectElement[JC] def getAttributeNode(name: String): Attr
 HTMLSelectElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLSelectElement[JC] def getBoundingClientRect(): DOMRect
 HTMLSelectElement[JC] def getClientRects(): DOMRectList
-HTMLSelectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLSelectElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLSelectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLSelectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLSelectElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLSelectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLSelectElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLSelectElement[JC] def hasAttribute(name: String): Boolean
 HTMLSelectElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10621,7 +10621,7 @@ HTMLSourceElement[JC] def before(nodes: Node | String*): Unit
 HTMLSourceElement[JC] def blur(): Unit
 HTMLSourceElement[JC] def childElementCount: Int
 HTMLSourceElement[JC] def childNodes: NodeList[Node]
-HTMLSourceElement[JC] def children: HTMLCollection
+HTMLSourceElement[JC] def children: HTMLCollection[Element]
 HTMLSourceElement[JC] var classList: DOMTokenList
 HTMLSourceElement[JC] var className: String
 HTMLSourceElement[JC] def click(): Unit
@@ -10648,9 +10648,9 @@ HTMLSourceElement[JC] def getAttributeNode(name: String): Attr
 HTMLSourceElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLSourceElement[JC] def getBoundingClientRect(): DOMRect
 HTMLSourceElement[JC] def getClientRects(): DOMRectList
-HTMLSourceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLSourceElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLSourceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLSourceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLSourceElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLSourceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLSourceElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLSourceElement[JC] def hasAttribute(name: String): Boolean
 HTMLSourceElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10821,7 +10821,7 @@ HTMLSpanElement[JC] def before(nodes: Node | String*): Unit
 HTMLSpanElement[JC] def blur(): Unit
 HTMLSpanElement[JC] def childElementCount: Int
 HTMLSpanElement[JC] def childNodes: NodeList[Node]
-HTMLSpanElement[JC] def children: HTMLCollection
+HTMLSpanElement[JC] def children: HTMLCollection[Element]
 HTMLSpanElement[JC] var classList: DOMTokenList
 HTMLSpanElement[JC] var className: String
 HTMLSpanElement[JC] def click(): Unit
@@ -10848,9 +10848,9 @@ HTMLSpanElement[JC] def getAttributeNode(name: String): Attr
 HTMLSpanElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLSpanElement[JC] def getBoundingClientRect(): DOMRect
 HTMLSpanElement[JC] def getClientRects(): DOMRectList
-HTMLSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLSpanElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLSpanElement[JC] def hasAttribute(name: String): Boolean
 HTMLSpanElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11018,7 +11018,7 @@ HTMLStyleElement[JC] def before(nodes: Node | String*): Unit
 HTMLStyleElement[JC] def blur(): Unit
 HTMLStyleElement[JC] def childElementCount: Int
 HTMLStyleElement[JC] def childNodes: NodeList[Node]
-HTMLStyleElement[JC] def children: HTMLCollection
+HTMLStyleElement[JC] def children: HTMLCollection[Element]
 HTMLStyleElement[JC] var classList: DOMTokenList
 HTMLStyleElement[JC] var className: String
 HTMLStyleElement[JC] def click(): Unit
@@ -11045,9 +11045,9 @@ HTMLStyleElement[JC] def getAttributeNode(name: String): Attr
 HTMLStyleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLStyleElement[JC] def getBoundingClientRect(): DOMRect
 HTMLStyleElement[JC] def getClientRects(): DOMRectList
-HTMLStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLStyleElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLStyleElement[JC] def hasAttribute(name: String): Boolean
 HTMLStyleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11219,7 +11219,7 @@ HTMLTableCaptionElement[JC] def before(nodes: Node | String*): Unit
 HTMLTableCaptionElement[JC] def blur(): Unit
 HTMLTableCaptionElement[JC] def childElementCount: Int
 HTMLTableCaptionElement[JC] def childNodes: NodeList[Node]
-HTMLTableCaptionElement[JC] def children: HTMLCollection
+HTMLTableCaptionElement[JC] def children: HTMLCollection[Element]
 HTMLTableCaptionElement[JC] var classList: DOMTokenList
 HTMLTableCaptionElement[JC] var className: String
 HTMLTableCaptionElement[JC] def click(): Unit
@@ -11246,9 +11246,9 @@ HTMLTableCaptionElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableCaptionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableCaptionElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableCaptionElement[JC] def getClientRects(): DOMRectList
-HTMLTableCaptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableCaptionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableCaptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableCaptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableCaptionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableCaptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableCaptionElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableCaptionElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableCaptionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11417,7 +11417,7 @@ HTMLTableCellElement[JC] def blur(): Unit
 HTMLTableCellElement[JC] def cellIndex: Int
 HTMLTableCellElement[JC] def childElementCount: Int
 HTMLTableCellElement[JC] def childNodes: NodeList[Node]
-HTMLTableCellElement[JC] def children: HTMLCollection
+HTMLTableCellElement[JC] def children: HTMLCollection[Element]
 HTMLTableCellElement[JC] var classList: DOMTokenList
 HTMLTableCellElement[JC] var className: String
 HTMLTableCellElement[JC] def click(): Unit
@@ -11445,9 +11445,9 @@ HTMLTableCellElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableCellElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableCellElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableCellElement[JC] def getClientRects(): DOMRectList
-HTMLTableCellElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableCellElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableCellElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableCellElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableCellElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableCellElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableCellElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableCellElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableCellElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11617,7 +11617,7 @@ HTMLTableColElement[JC] def before(nodes: Node | String*): Unit
 HTMLTableColElement[JC] def blur(): Unit
 HTMLTableColElement[JC] def childElementCount: Int
 HTMLTableColElement[JC] def childNodes: NodeList[Node]
-HTMLTableColElement[JC] def children: HTMLCollection
+HTMLTableColElement[JC] def children: HTMLCollection[Element]
 HTMLTableColElement[JC] var classList: DOMTokenList
 HTMLTableColElement[JC] var className: String
 HTMLTableColElement[JC] def click(): Unit
@@ -11644,9 +11644,9 @@ HTMLTableColElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableColElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableColElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableColElement[JC] def getClientRects(): DOMRectList
-HTMLTableColElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableColElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableColElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableColElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableColElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableColElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableColElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableColElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableColElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11816,7 +11816,7 @@ HTMLTableElement[JC] def blur(): Unit
 HTMLTableElement[JC] var caption: HTMLTableCaptionElement
 HTMLTableElement[JC] def childElementCount: Int
 HTMLTableElement[JC] def childNodes: NodeList[Node]
-HTMLTableElement[JC] def children: HTMLCollection
+HTMLTableElement[JC] def children: HTMLCollection[Element]
 HTMLTableElement[JC] var classList: DOMTokenList
 HTMLTableElement[JC] var className: String
 HTMLTableElement[JC] def click(): Unit
@@ -11851,9 +11851,9 @@ HTMLTableElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableElement[JC] def getClientRects(): DOMRectList
-HTMLTableElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11994,7 +11994,7 @@ HTMLTableElement[JC] def replaceChild(newChild: Node, oldChild: Node): Node
 HTMLTableElement[JC] def replaceChildren(nodes: Node | String*): Unit
 HTMLTableElement[JC] def requestFullscreen(options: FullscreenOptions?): js.Promise[Unit]
 HTMLTableElement[JC] def requestPointerLock(): Unit
-HTMLTableElement[JC] def rows: HTMLCollection
+HTMLTableElement[JC] def rows: HTMLCollection[Element]
 HTMLTableElement[JC] def scrollHeight: Int
 HTMLTableElement[JC] def scrollIntoView(top: Boolean?): Unit
 HTMLTableElement[JC] var scrollLeft: Double
@@ -12008,7 +12008,7 @@ HTMLTableElement[JC] var spellcheck: Boolean
 HTMLTableElement[JC] def style: CSSStyleDeclaration
 HTMLTableElement[JC] def style_ = (value: CSSStyleDeclaration): Unit
 HTMLTableElement[JC] def style_ = (value: String): Unit
-HTMLTableElement[JC] def tBodies: HTMLCollection
+HTMLTableElement[JC] def tBodies: HTMLCollection[Element]
 HTMLTableElement[JC] var tFoot: HTMLTableSectionElement
 HTMLTableElement[JC] var tHead: HTMLTableSectionElement
 HTMLTableElement[JC] var tabIndex: Int
@@ -12028,10 +12028,10 @@ HTMLTableRowElement[JC] def blur(): Unit
 HTMLTableRowElement[JC] var borderColor: js.Any
 HTMLTableRowElement[JC] var borderColorDark: js.Any
 HTMLTableRowElement[JC] var borderColorLight: js.Any
-HTMLTableRowElement[JC] def cells: HTMLCollection
+HTMLTableRowElement[JC] def cells: HTMLCollection[Element]
 HTMLTableRowElement[JC] def childElementCount: Int
 HTMLTableRowElement[JC] def childNodes: NodeList[Node]
-HTMLTableRowElement[JC] def children: HTMLCollection
+HTMLTableRowElement[JC] def children: HTMLCollection[Element]
 HTMLTableRowElement[JC] var classList: DOMTokenList
 HTMLTableRowElement[JC] var className: String
 HTMLTableRowElement[JC] def click(): Unit
@@ -12059,9 +12059,9 @@ HTMLTableRowElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableRowElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableRowElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableRowElement[JC] def getClientRects(): DOMRectList
-HTMLTableRowElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableRowElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableRowElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableRowElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableRowElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableRowElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableRowElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableRowElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableRowElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12233,7 +12233,7 @@ HTMLTableSectionElement[JC] def before(nodes: Node | String*): Unit
 HTMLTableSectionElement[JC] def blur(): Unit
 HTMLTableSectionElement[JC] def childElementCount: Int
 HTMLTableSectionElement[JC] def childNodes: NodeList[Node]
-HTMLTableSectionElement[JC] def children: HTMLCollection
+HTMLTableSectionElement[JC] def children: HTMLCollection[Element]
 HTMLTableSectionElement[JC] var classList: DOMTokenList
 HTMLTableSectionElement[JC] var className: String
 HTMLTableSectionElement[JC] def click(): Unit
@@ -12261,9 +12261,9 @@ HTMLTableSectionElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableSectionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableSectionElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableSectionElement[JC] def getClientRects(): DOMRectList
-HTMLTableSectionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableSectionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableSectionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableSectionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableSectionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableSectionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableSectionElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableSectionElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableSectionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12404,7 +12404,7 @@ HTMLTableSectionElement[JC] def replaceChild(newChild: Node, oldChild: Node): No
 HTMLTableSectionElement[JC] def replaceChildren(nodes: Node | String*): Unit
 HTMLTableSectionElement[JC] def requestFullscreen(options: FullscreenOptions?): js.Promise[Unit]
 HTMLTableSectionElement[JC] def requestPointerLock(): Unit
-HTMLTableSectionElement[JC] def rows: HTMLCollection
+HTMLTableSectionElement[JC] def rows: HTMLCollection[Element]
 HTMLTableSectionElement[JC] def scrollHeight: Int
 HTMLTableSectionElement[JC] def scrollIntoView(top: Boolean?): Unit
 HTMLTableSectionElement[JC] var scrollLeft: Double
@@ -12436,7 +12436,7 @@ HTMLTextAreaElement[JC] def blur(): Unit
 HTMLTextAreaElement[JC] def checkValidity(): Boolean
 HTMLTextAreaElement[JC] def childElementCount: Int
 HTMLTextAreaElement[JC] def childNodes: NodeList[Node]
-HTMLTextAreaElement[JC] def children: HTMLCollection
+HTMLTextAreaElement[JC] def children: HTMLCollection[Element]
 HTMLTextAreaElement[JC] var classList: DOMTokenList
 HTMLTextAreaElement[JC] var className: String
 HTMLTextAreaElement[JC] def click(): Unit
@@ -12467,9 +12467,9 @@ HTMLTextAreaElement[JC] def getAttributeNode(name: String): Attr
 HTMLTextAreaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTextAreaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTextAreaElement[JC] def getClientRects(): DOMRectList
-HTMLTextAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTextAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTextAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTextAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTextAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTextAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTextAreaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTextAreaElement[JC] def hasAttribute(name: String): Boolean
 HTMLTextAreaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12655,7 +12655,7 @@ HTMLTitleElement[JC] def before(nodes: Node | String*): Unit
 HTMLTitleElement[JC] def blur(): Unit
 HTMLTitleElement[JC] def childElementCount: Int
 HTMLTitleElement[JC] def childNodes: NodeList[Node]
-HTMLTitleElement[JC] def children: HTMLCollection
+HTMLTitleElement[JC] def children: HTMLCollection[Element]
 HTMLTitleElement[JC] var classList: DOMTokenList
 HTMLTitleElement[JC] var className: String
 HTMLTitleElement[JC] def click(): Unit
@@ -12682,9 +12682,9 @@ HTMLTitleElement[JC] def getAttributeNode(name: String): Attr
 HTMLTitleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTitleElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTitleElement[JC] def getClientRects(): DOMRectList
-HTMLTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTitleElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTitleElement[JC] def hasAttribute(name: String): Boolean
 HTMLTitleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12853,7 +12853,7 @@ HTMLTrackElement[JC] def before(nodes: Node | String*): Unit
 HTMLTrackElement[JC] def blur(): Unit
 HTMLTrackElement[JC] def childElementCount: Int
 HTMLTrackElement[JC] def childNodes: NodeList[Node]
-HTMLTrackElement[JC] def children: HTMLCollection
+HTMLTrackElement[JC] def children: HTMLCollection[Element]
 HTMLTrackElement[JC] var classList: DOMTokenList
 HTMLTrackElement[JC] var className: String
 HTMLTrackElement[JC] def click(): Unit
@@ -12880,9 +12880,9 @@ HTMLTrackElement[JC] def getAttributeNode(name: String): Attr
 HTMLTrackElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTrackElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTrackElement[JC] def getClientRects(): DOMRectList
-HTMLTrackElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTrackElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTrackElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTrackElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTrackElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTrackElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTrackElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTrackElement[JC] def hasAttribute(name: String): Boolean
 HTMLTrackElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -13055,7 +13055,7 @@ HTMLUListElement[JC] def before(nodes: Node | String*): Unit
 HTMLUListElement[JC] def blur(): Unit
 HTMLUListElement[JC] def childElementCount: Int
 HTMLUListElement[JC] def childNodes: NodeList[Node]
-HTMLUListElement[JC] def children: HTMLCollection
+HTMLUListElement[JC] def children: HTMLCollection[Element]
 HTMLUListElement[JC] var classList: DOMTokenList
 HTMLUListElement[JC] var className: String
 HTMLUListElement[JC] def click(): Unit
@@ -13082,9 +13082,9 @@ HTMLUListElement[JC] def getAttributeNode(name: String): Attr
 HTMLUListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLUListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLUListElement[JC] def getClientRects(): DOMRectList
-HTMLUListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLUListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLUListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLUListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLUListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLUListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLUListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLUListElement[JC] def hasAttribute(name: String): Boolean
 HTMLUListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -13252,7 +13252,7 @@ HTMLUnknownElement[JC] def before(nodes: Node | String*): Unit
 HTMLUnknownElement[JC] def blur(): Unit
 HTMLUnknownElement[JC] def childElementCount: Int
 HTMLUnknownElement[JC] def childNodes: NodeList[Node]
-HTMLUnknownElement[JC] def children: HTMLCollection
+HTMLUnknownElement[JC] def children: HTMLCollection[Element]
 HTMLUnknownElement[JC] var classList: DOMTokenList
 HTMLUnknownElement[JC] var className: String
 HTMLUnknownElement[JC] def click(): Unit
@@ -13279,9 +13279,9 @@ HTMLUnknownElement[JC] def getAttributeNode(name: String): Attr
 HTMLUnknownElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLUnknownElement[JC] def getBoundingClientRect(): DOMRect
 HTMLUnknownElement[JC] def getClientRects(): DOMRectList
-HTMLUnknownElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLUnknownElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLUnknownElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLUnknownElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLUnknownElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLUnknownElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLUnknownElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLUnknownElement[JC] def hasAttribute(name: String): Boolean
 HTMLUnknownElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -13453,7 +13453,7 @@ HTMLVideoElement[JC] def buffered: TimeRanges
 HTMLVideoElement[JC] def canPlayType(`type`: String): String
 HTMLVideoElement[JC] def childElementCount: Int
 HTMLVideoElement[JC] def childNodes: NodeList[Node]
-HTMLVideoElement[JC] def children: HTMLCollection
+HTMLVideoElement[JC] def children: HTMLCollection[Element]
 HTMLVideoElement[JC] var classList: DOMTokenList
 HTMLVideoElement[JC] var className: String
 HTMLVideoElement[JC] def click(): Unit
@@ -13487,9 +13487,9 @@ HTMLVideoElement[JC] def getAttributeNode(name: String): Attr
 HTMLVideoElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLVideoElement[JC] def getBoundingClientRect(): DOMRect
 HTMLVideoElement[JC] def getClientRects(): DOMRectList
-HTMLVideoElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLVideoElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLVideoElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLVideoElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLVideoElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLVideoElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLVideoElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLVideoElement[JC] def hasAttribute(name: String): Boolean
 HTMLVideoElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -14845,7 +14845,7 @@ PannerNode[JT] def setOrientation(x: Double?, y: Double?, z: Double?): Unit
 PannerNode[JT] def setPosition(x: Double?, y: Double?, z: Double?): Unit
 PannerNode[JT] def setVelocity(x: Double?, y: Double?, z: Double?): Unit
 ParentNode[JT] def childElementCount: Int
-ParentNode[JT] def children: HTMLCollection
+ParentNode[JT] def children: HTMLCollection[Element]
 ParentNode[JT] def firstElementChild: Element
 ParentNode[JT] def lastElementChild: Element
 ParentNode[JT] def replaceChildren(nodes: Node | String*): Unit
@@ -15227,7 +15227,7 @@ SVGAElement[JC] def baseURI: String
 SVGAElement[JC] def before(nodes: Node | String*): Unit
 SVGAElement[JC] def childElementCount: Int
 SVGAElement[JC] def childNodes: NodeList[Node]
-SVGAElement[JC] def children: HTMLCollection
+SVGAElement[JC] def children: HTMLCollection[Element]
 SVGAElement[JC] var classList: DOMTokenList
 SVGAElement[JC] var className: SVGAnimatedString
 SVGAElement[JC] def clientHeight: Int
@@ -15250,9 +15250,9 @@ SVGAElement[JC] def getBBox(): SVGRect
 SVGAElement[JC] def getBoundingClientRect(): DOMRect
 SVGAElement[JC] def getCTM(): SVGMatrix
 SVGAElement[JC] def getClientRects(): DOMRectList
-SVGAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGAElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGAElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGAElement[JC] def getScreenCTM(): SVGMatrix
 SVGAElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGAElement[JC] def hasAttribute(name: String): Boolean
@@ -15392,7 +15392,7 @@ SVGCircleElement[JC] def baseURI: String
 SVGCircleElement[JC] def before(nodes: Node | String*): Unit
 SVGCircleElement[JC] def childElementCount: Int
 SVGCircleElement[JC] def childNodes: NodeList[Node]
-SVGCircleElement[JC] def children: HTMLCollection
+SVGCircleElement[JC] def children: HTMLCollection[Element]
 SVGCircleElement[JC] var classList: DOMTokenList
 SVGCircleElement[JC] var className: SVGAnimatedString
 SVGCircleElement[JC] def clientHeight: Int
@@ -15417,9 +15417,9 @@ SVGCircleElement[JC] def getBBox(): SVGRect
 SVGCircleElement[JC] def getBoundingClientRect(): DOMRect
 SVGCircleElement[JC] def getCTM(): SVGMatrix
 SVGCircleElement[JC] def getClientRects(): DOMRectList
-SVGCircleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGCircleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGCircleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGCircleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGCircleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGCircleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGCircleElement[JC] def getScreenCTM(): SVGMatrix
 SVGCircleElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGCircleElement[JC] def hasAttribute(name: String): Boolean
@@ -15523,7 +15523,7 @@ SVGClipPathElement[JC] def baseURI: String
 SVGClipPathElement[JC] def before(nodes: Node | String*): Unit
 SVGClipPathElement[JC] def childElementCount: Int
 SVGClipPathElement[JC] def childNodes: NodeList[Node]
-SVGClipPathElement[JC] def children: HTMLCollection
+SVGClipPathElement[JC] def children: HTMLCollection[Element]
 SVGClipPathElement[JC] var classList: DOMTokenList
 SVGClipPathElement[JC] var className: SVGAnimatedString
 SVGClipPathElement[JC] def clientHeight: Int
@@ -15547,9 +15547,9 @@ SVGClipPathElement[JC] def getBBox(): SVGRect
 SVGClipPathElement[JC] def getBoundingClientRect(): DOMRect
 SVGClipPathElement[JC] def getCTM(): SVGMatrix
 SVGClipPathElement[JC] def getClientRects(): DOMRectList
-SVGClipPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGClipPathElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGClipPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGClipPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGClipPathElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGClipPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGClipPathElement[JC] def getScreenCTM(): SVGMatrix
 SVGClipPathElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGClipPathElement[JC] def hasAttribute(name: String): Boolean
@@ -15650,7 +15650,7 @@ SVGComponentTransferFunctionElement[JC] def baseURI: String
 SVGComponentTransferFunctionElement[JC] def before(nodes: Node | String*): Unit
 SVGComponentTransferFunctionElement[JC] def childElementCount: Int
 SVGComponentTransferFunctionElement[JC] def childNodes: NodeList[Node]
-SVGComponentTransferFunctionElement[JC] def children: HTMLCollection
+SVGComponentTransferFunctionElement[JC] def children: HTMLCollection[Element]
 SVGComponentTransferFunctionElement[JC] var classList: DOMTokenList
 SVGComponentTransferFunctionElement[JC] def clientHeight: Int
 SVGComponentTransferFunctionElement[JC] def clientLeft: Int
@@ -15669,9 +15669,9 @@ SVGComponentTransferFunctionElement[JC] def getAttributeNode(name: String): Attr
 SVGComponentTransferFunctionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGComponentTransferFunctionElement[JC] def getBoundingClientRect(): DOMRect
 SVGComponentTransferFunctionElement[JC] def getClientRects(): DOMRectList
-SVGComponentTransferFunctionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGComponentTransferFunctionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGComponentTransferFunctionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGComponentTransferFunctionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGComponentTransferFunctionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGComponentTransferFunctionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGComponentTransferFunctionElement[JC] def hasAttribute(name: String): Boolean
 SVGComponentTransferFunctionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGComponentTransferFunctionElement[JC] def hasAttributes(): Boolean
@@ -15771,7 +15771,7 @@ SVGDefsElement[JC] def baseURI: String
 SVGDefsElement[JC] def before(nodes: Node | String*): Unit
 SVGDefsElement[JC] def childElementCount: Int
 SVGDefsElement[JC] def childNodes: NodeList[Node]
-SVGDefsElement[JC] def children: HTMLCollection
+SVGDefsElement[JC] def children: HTMLCollection[Element]
 SVGDefsElement[JC] var classList: DOMTokenList
 SVGDefsElement[JC] var className: SVGAnimatedString
 SVGDefsElement[JC] def clientHeight: Int
@@ -15794,9 +15794,9 @@ SVGDefsElement[JC] def getBBox(): SVGRect
 SVGDefsElement[JC] def getBoundingClientRect(): DOMRect
 SVGDefsElement[JC] def getCTM(): SVGMatrix
 SVGDefsElement[JC] def getClientRects(): DOMRectList
-SVGDefsElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGDefsElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGDefsElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGDefsElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGDefsElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGDefsElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGDefsElement[JC] def getScreenCTM(): SVGMatrix
 SVGDefsElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGDefsElement[JC] def hasAttribute(name: String): Boolean
@@ -15896,7 +15896,7 @@ SVGDescElement[JC] def baseURI: String
 SVGDescElement[JC] def before(nodes: Node | String*): Unit
 SVGDescElement[JC] def childElementCount: Int
 SVGDescElement[JC] def childNodes: NodeList[Node]
-SVGDescElement[JC] def children: HTMLCollection
+SVGDescElement[JC] def children: HTMLCollection[Element]
 SVGDescElement[JC] var classList: DOMTokenList
 SVGDescElement[JC] var className: SVGAnimatedString
 SVGDescElement[JC] def clientHeight: Int
@@ -15915,9 +15915,9 @@ SVGDescElement[JC] def getAttributeNode(name: String): Attr
 SVGDescElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGDescElement[JC] def getBoundingClientRect(): DOMRect
 SVGDescElement[JC] def getClientRects(): DOMRectList
-SVGDescElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGDescElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGDescElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGDescElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGDescElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGDescElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGDescElement[JC] def hasAttribute(name: String): Boolean
 SVGDescElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGDescElement[JC] def hasAttributes(): Boolean
@@ -16009,7 +16009,7 @@ SVGElement[JC] def baseURI: String
 SVGElement[JC] def before(nodes: Node | String*): Unit
 SVGElement[JC] def childElementCount: Int
 SVGElement[JC] def childNodes: NodeList[Node]
-SVGElement[JC] def children: HTMLCollection
+SVGElement[JC] def children: HTMLCollection[Element]
 SVGElement[JC] var classList: DOMTokenList
 SVGElement[JC] def clientHeight: Int
 SVGElement[JC] def clientLeft: Int
@@ -16027,9 +16027,9 @@ SVGElement[JC] def getAttributeNode(name: String): Attr
 SVGElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGElement[JC] def getBoundingClientRect(): DOMRect
 SVGElement[JC] def getClientRects(): DOMRectList
-SVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGElement[JC] def hasAttribute(name: String): Boolean
 SVGElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGElement[JC] def hasAttributes(): Boolean
@@ -16133,7 +16133,7 @@ SVGEllipseElement[JC] def baseURI: String
 SVGEllipseElement[JC] def before(nodes: Node | String*): Unit
 SVGEllipseElement[JC] def childElementCount: Int
 SVGEllipseElement[JC] def childNodes: NodeList[Node]
-SVGEllipseElement[JC] def children: HTMLCollection
+SVGEllipseElement[JC] def children: HTMLCollection[Element]
 SVGEllipseElement[JC] var classList: DOMTokenList
 SVGEllipseElement[JC] var className: SVGAnimatedString
 SVGEllipseElement[JC] def clientHeight: Int
@@ -16158,9 +16158,9 @@ SVGEllipseElement[JC] def getBBox(): SVGRect
 SVGEllipseElement[JC] def getBoundingClientRect(): DOMRect
 SVGEllipseElement[JC] def getCTM(): SVGMatrix
 SVGEllipseElement[JC] def getClientRects(): DOMRectList
-SVGEllipseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGEllipseElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGEllipseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGEllipseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGEllipseElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGEllipseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGEllipseElement[JC] def getScreenCTM(): SVGMatrix
 SVGEllipseElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGEllipseElement[JC] def hasAttribute(name: String): Boolean
@@ -16269,7 +16269,7 @@ SVGFEBlendElement[JC] def baseURI: String
 SVGFEBlendElement[JC] def before(nodes: Node | String*): Unit
 SVGFEBlendElement[JC] def childElementCount: Int
 SVGFEBlendElement[JC] def childNodes: NodeList[Node]
-SVGFEBlendElement[JC] def children: HTMLCollection
+SVGFEBlendElement[JC] def children: HTMLCollection[Element]
 SVGFEBlendElement[JC] var classList: DOMTokenList
 SVGFEBlendElement[JC] var className: SVGAnimatedString
 SVGFEBlendElement[JC] def clientHeight: Int
@@ -16288,9 +16288,9 @@ SVGFEBlendElement[JC] def getAttributeNode(name: String): Attr
 SVGFEBlendElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEBlendElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEBlendElement[JC] def getClientRects(): DOMRectList
-SVGFEBlendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEBlendElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEBlendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEBlendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEBlendElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEBlendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEBlendElement[JC] def hasAttribute(name: String): Boolean
 SVGFEBlendElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEBlendElement[JC] def hasAttributes(): Boolean
@@ -16394,7 +16394,7 @@ SVGFEColorMatrixElement[JC] def baseURI: String
 SVGFEColorMatrixElement[JC] def before(nodes: Node | String*): Unit
 SVGFEColorMatrixElement[JC] def childElementCount: Int
 SVGFEColorMatrixElement[JC] def childNodes: NodeList[Node]
-SVGFEColorMatrixElement[JC] def children: HTMLCollection
+SVGFEColorMatrixElement[JC] def children: HTMLCollection[Element]
 SVGFEColorMatrixElement[JC] var classList: DOMTokenList
 SVGFEColorMatrixElement[JC] var className: SVGAnimatedString
 SVGFEColorMatrixElement[JC] def clientHeight: Int
@@ -16413,9 +16413,9 @@ SVGFEColorMatrixElement[JC] def getAttributeNode(name: String): Attr
 SVGFEColorMatrixElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEColorMatrixElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEColorMatrixElement[JC] def getClientRects(): DOMRectList
-SVGFEColorMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEColorMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEColorMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEColorMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEColorMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEColorMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEColorMatrixElement[JC] def hasAttribute(name: String): Boolean
 SVGFEColorMatrixElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEColorMatrixElement[JC] def hasAttributes(): Boolean
@@ -16518,7 +16518,7 @@ SVGFEComponentTransferElement[JC] def baseURI: String
 SVGFEComponentTransferElement[JC] def before(nodes: Node | String*): Unit
 SVGFEComponentTransferElement[JC] def childElementCount: Int
 SVGFEComponentTransferElement[JC] def childNodes: NodeList[Node]
-SVGFEComponentTransferElement[JC] def children: HTMLCollection
+SVGFEComponentTransferElement[JC] def children: HTMLCollection[Element]
 SVGFEComponentTransferElement[JC] var classList: DOMTokenList
 SVGFEComponentTransferElement[JC] var className: SVGAnimatedString
 SVGFEComponentTransferElement[JC] def clientHeight: Int
@@ -16537,9 +16537,9 @@ SVGFEComponentTransferElement[JC] def getAttributeNode(name: String): Attr
 SVGFEComponentTransferElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEComponentTransferElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEComponentTransferElement[JC] def getClientRects(): DOMRectList
-SVGFEComponentTransferElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEComponentTransferElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEComponentTransferElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEComponentTransferElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEComponentTransferElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEComponentTransferElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEComponentTransferElement[JC] def hasAttribute(name: String): Boolean
 SVGFEComponentTransferElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEComponentTransferElement[JC] def hasAttributes(): Boolean
@@ -16635,7 +16635,7 @@ SVGFECompositeElement[JC] def baseURI: String
 SVGFECompositeElement[JC] def before(nodes: Node | String*): Unit
 SVGFECompositeElement[JC] def childElementCount: Int
 SVGFECompositeElement[JC] def childNodes: NodeList[Node]
-SVGFECompositeElement[JC] def children: HTMLCollection
+SVGFECompositeElement[JC] def children: HTMLCollection[Element]
 SVGFECompositeElement[JC] var classList: DOMTokenList
 SVGFECompositeElement[JC] var className: SVGAnimatedString
 SVGFECompositeElement[JC] def clientHeight: Int
@@ -16654,9 +16654,9 @@ SVGFECompositeElement[JC] def getAttributeNode(name: String): Attr
 SVGFECompositeElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFECompositeElement[JC] def getBoundingClientRect(): DOMRect
 SVGFECompositeElement[JC] def getClientRects(): DOMRectList
-SVGFECompositeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFECompositeElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFECompositeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFECompositeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFECompositeElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFECompositeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFECompositeElement[JC] def hasAttribute(name: String): Boolean
 SVGFECompositeElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFECompositeElement[JC] def hasAttributes(): Boolean
@@ -16766,7 +16766,7 @@ SVGFEConvolveMatrixElement[JC] def before(nodes: Node | String*): Unit
 SVGFEConvolveMatrixElement[JC] def bias: SVGAnimatedNumber
 SVGFEConvolveMatrixElement[JC] def childElementCount: Int
 SVGFEConvolveMatrixElement[JC] def childNodes: NodeList[Node]
-SVGFEConvolveMatrixElement[JC] def children: HTMLCollection
+SVGFEConvolveMatrixElement[JC] def children: HTMLCollection[Element]
 SVGFEConvolveMatrixElement[JC] var classList: DOMTokenList
 SVGFEConvolveMatrixElement[JC] var className: SVGAnimatedString
 SVGFEConvolveMatrixElement[JC] def clientHeight: Int
@@ -16787,9 +16787,9 @@ SVGFEConvolveMatrixElement[JC] def getAttributeNode(name: String): Attr
 SVGFEConvolveMatrixElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEConvolveMatrixElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEConvolveMatrixElement[JC] def getClientRects(): DOMRectList
-SVGFEConvolveMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEConvolveMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEConvolveMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEConvolveMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEConvolveMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEConvolveMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEConvolveMatrixElement[JC] def hasAttribute(name: String): Boolean
 SVGFEConvolveMatrixElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEConvolveMatrixElement[JC] def hasAttributes(): Boolean
@@ -16897,7 +16897,7 @@ SVGFEDiffuseLightingElement[JC] def baseURI: String
 SVGFEDiffuseLightingElement[JC] def before(nodes: Node | String*): Unit
 SVGFEDiffuseLightingElement[JC] def childElementCount: Int
 SVGFEDiffuseLightingElement[JC] def childNodes: NodeList[Node]
-SVGFEDiffuseLightingElement[JC] def children: HTMLCollection
+SVGFEDiffuseLightingElement[JC] def children: HTMLCollection[Element]
 SVGFEDiffuseLightingElement[JC] var classList: DOMTokenList
 SVGFEDiffuseLightingElement[JC] var className: SVGAnimatedString
 SVGFEDiffuseLightingElement[JC] def clientHeight: Int
@@ -16917,9 +16917,9 @@ SVGFEDiffuseLightingElement[JC] def getAttributeNode(name: String): Attr
 SVGFEDiffuseLightingElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEDiffuseLightingElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEDiffuseLightingElement[JC] def getClientRects(): DOMRectList
-SVGFEDiffuseLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEDiffuseLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEDiffuseLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEDiffuseLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEDiffuseLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEDiffuseLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEDiffuseLightingElement[JC] def hasAttribute(name: String): Boolean
 SVGFEDiffuseLightingElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEDiffuseLightingElement[JC] def hasAttributes(): Boolean
@@ -17018,7 +17018,7 @@ SVGFEDisplacementMapElement[JC] def baseURI: String
 SVGFEDisplacementMapElement[JC] def before(nodes: Node | String*): Unit
 SVGFEDisplacementMapElement[JC] def childElementCount: Int
 SVGFEDisplacementMapElement[JC] def childNodes: NodeList[Node]
-SVGFEDisplacementMapElement[JC] def children: HTMLCollection
+SVGFEDisplacementMapElement[JC] def children: HTMLCollection[Element]
 SVGFEDisplacementMapElement[JC] var classList: DOMTokenList
 SVGFEDisplacementMapElement[JC] var className: SVGAnimatedString
 SVGFEDisplacementMapElement[JC] def clientHeight: Int
@@ -17037,9 +17037,9 @@ SVGFEDisplacementMapElement[JC] def getAttributeNode(name: String): Attr
 SVGFEDisplacementMapElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEDisplacementMapElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEDisplacementMapElement[JC] def getClientRects(): DOMRectList
-SVGFEDisplacementMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEDisplacementMapElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEDisplacementMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEDisplacementMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEDisplacementMapElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEDisplacementMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEDisplacementMapElement[JC] def hasAttribute(name: String): Boolean
 SVGFEDisplacementMapElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEDisplacementMapElement[JC] def hasAttributes(): Boolean
@@ -17145,7 +17145,7 @@ SVGFEDistantLightElement[JC] def baseURI: String
 SVGFEDistantLightElement[JC] def before(nodes: Node | String*): Unit
 SVGFEDistantLightElement[JC] def childElementCount: Int
 SVGFEDistantLightElement[JC] def childNodes: NodeList[Node]
-SVGFEDistantLightElement[JC] def children: HTMLCollection
+SVGFEDistantLightElement[JC] def children: HTMLCollection[Element]
 SVGFEDistantLightElement[JC] var classList: DOMTokenList
 SVGFEDistantLightElement[JC] def clientHeight: Int
 SVGFEDistantLightElement[JC] def clientLeft: Int
@@ -17164,9 +17164,9 @@ SVGFEDistantLightElement[JC] def getAttributeNode(name: String): Attr
 SVGFEDistantLightElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEDistantLightElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEDistantLightElement[JC] def getClientRects(): DOMRectList
-SVGFEDistantLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEDistantLightElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEDistantLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEDistantLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEDistantLightElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEDistantLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEDistantLightElement[JC] def hasAttribute(name: String): Boolean
 SVGFEDistantLightElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEDistantLightElement[JC] def hasAttributes(): Boolean
@@ -17255,7 +17255,7 @@ SVGFEFloodElement[JC] def baseURI: String
 SVGFEFloodElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFloodElement[JC] def childElementCount: Int
 SVGFEFloodElement[JC] def childNodes: NodeList[Node]
-SVGFEFloodElement[JC] def children: HTMLCollection
+SVGFEFloodElement[JC] def children: HTMLCollection[Element]
 SVGFEFloodElement[JC] var classList: DOMTokenList
 SVGFEFloodElement[JC] var className: SVGAnimatedString
 SVGFEFloodElement[JC] def clientHeight: Int
@@ -17274,9 +17274,9 @@ SVGFEFloodElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFloodElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFloodElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFloodElement[JC] def getClientRects(): DOMRectList
-SVGFEFloodElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFloodElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFloodElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFloodElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFloodElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFloodElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFloodElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFloodElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFloodElement[JC] def hasAttributes(): Boolean
@@ -17372,7 +17372,7 @@ SVGFEFuncAElement[JC] def baseURI: String
 SVGFEFuncAElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncAElement[JC] def childElementCount: Int
 SVGFEFuncAElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncAElement[JC] def children: HTMLCollection
+SVGFEFuncAElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncAElement[JC] var classList: DOMTokenList
 SVGFEFuncAElement[JC] def clientHeight: Int
 SVGFEFuncAElement[JC] def clientLeft: Int
@@ -17391,9 +17391,9 @@ SVGFEFuncAElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncAElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncAElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncAElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncAElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncAElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncAElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncAElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncAElement[JC] def hasAttributes(): Boolean
@@ -17488,7 +17488,7 @@ SVGFEFuncBElement[JC] def baseURI: String
 SVGFEFuncBElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncBElement[JC] def childElementCount: Int
 SVGFEFuncBElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncBElement[JC] def children: HTMLCollection
+SVGFEFuncBElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncBElement[JC] var classList: DOMTokenList
 SVGFEFuncBElement[JC] def clientHeight: Int
 SVGFEFuncBElement[JC] def clientLeft: Int
@@ -17507,9 +17507,9 @@ SVGFEFuncBElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncBElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncBElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncBElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncBElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncBElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncBElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncBElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncBElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncBElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncBElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncBElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncBElement[JC] def hasAttributes(): Boolean
@@ -17604,7 +17604,7 @@ SVGFEFuncGElement[JC] def baseURI: String
 SVGFEFuncGElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncGElement[JC] def childElementCount: Int
 SVGFEFuncGElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncGElement[JC] def children: HTMLCollection
+SVGFEFuncGElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncGElement[JC] var classList: DOMTokenList
 SVGFEFuncGElement[JC] def clientHeight: Int
 SVGFEFuncGElement[JC] def clientLeft: Int
@@ -17623,9 +17623,9 @@ SVGFEFuncGElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncGElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncGElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncGElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncGElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncGElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncGElement[JC] def hasAttributes(): Boolean
@@ -17720,7 +17720,7 @@ SVGFEFuncRElement[JC] def baseURI: String
 SVGFEFuncRElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncRElement[JC] def childElementCount: Int
 SVGFEFuncRElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncRElement[JC] def children: HTMLCollection
+SVGFEFuncRElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncRElement[JC] var classList: DOMTokenList
 SVGFEFuncRElement[JC] def clientHeight: Int
 SVGFEFuncRElement[JC] def clientLeft: Int
@@ -17739,9 +17739,9 @@ SVGFEFuncRElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncRElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncRElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncRElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncRElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncRElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncRElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncRElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncRElement[JC] def hasAttributes(): Boolean
@@ -17835,7 +17835,7 @@ SVGFEGaussianBlurElement[JC] def baseURI: String
 SVGFEGaussianBlurElement[JC] def before(nodes: Node | String*): Unit
 SVGFEGaussianBlurElement[JC] def childElementCount: Int
 SVGFEGaussianBlurElement[JC] def childNodes: NodeList[Node]
-SVGFEGaussianBlurElement[JC] def children: HTMLCollection
+SVGFEGaussianBlurElement[JC] def children: HTMLCollection[Element]
 SVGFEGaussianBlurElement[JC] var classList: DOMTokenList
 SVGFEGaussianBlurElement[JC] var className: SVGAnimatedString
 SVGFEGaussianBlurElement[JC] def clientHeight: Int
@@ -17854,9 +17854,9 @@ SVGFEGaussianBlurElement[JC] def getAttributeNode(name: String): Attr
 SVGFEGaussianBlurElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEGaussianBlurElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEGaussianBlurElement[JC] def getClientRects(): DOMRectList
-SVGFEGaussianBlurElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEGaussianBlurElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEGaussianBlurElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEGaussianBlurElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEGaussianBlurElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEGaussianBlurElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEGaussianBlurElement[JC] def hasAttribute(name: String): Boolean
 SVGFEGaussianBlurElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEGaussianBlurElement[JC] def hasAttributes(): Boolean
@@ -17955,7 +17955,7 @@ SVGFEImageElement[JC] def baseURI: String
 SVGFEImageElement[JC] def before(nodes: Node | String*): Unit
 SVGFEImageElement[JC] def childElementCount: Int
 SVGFEImageElement[JC] def childNodes: NodeList[Node]
-SVGFEImageElement[JC] def children: HTMLCollection
+SVGFEImageElement[JC] def children: HTMLCollection[Element]
 SVGFEImageElement[JC] var classList: DOMTokenList
 SVGFEImageElement[JC] var className: SVGAnimatedString
 SVGFEImageElement[JC] def clientHeight: Int
@@ -17975,9 +17975,9 @@ SVGFEImageElement[JC] def getAttributeNode(name: String): Attr
 SVGFEImageElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEImageElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEImageElement[JC] def getClientRects(): DOMRectList
-SVGFEImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEImageElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEImageElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEImageElement[JC] def hasAttribute(name: String): Boolean
 SVGFEImageElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEImageElement[JC] def hasAttributes(): Boolean
@@ -18076,7 +18076,7 @@ SVGFEMergeElement[JC] def baseURI: String
 SVGFEMergeElement[JC] def before(nodes: Node | String*): Unit
 SVGFEMergeElement[JC] def childElementCount: Int
 SVGFEMergeElement[JC] def childNodes: NodeList[Node]
-SVGFEMergeElement[JC] def children: HTMLCollection
+SVGFEMergeElement[JC] def children: HTMLCollection[Element]
 SVGFEMergeElement[JC] var classList: DOMTokenList
 SVGFEMergeElement[JC] var className: SVGAnimatedString
 SVGFEMergeElement[JC] def clientHeight: Int
@@ -18095,9 +18095,9 @@ SVGFEMergeElement[JC] def getAttributeNode(name: String): Attr
 SVGFEMergeElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEMergeElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEMergeElement[JC] def getClientRects(): DOMRectList
-SVGFEMergeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEMergeElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEMergeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEMergeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEMergeElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEMergeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEMergeElement[JC] def hasAttribute(name: String): Boolean
 SVGFEMergeElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEMergeElement[JC] def hasAttributes(): Boolean
@@ -18192,7 +18192,7 @@ SVGFEMergeNodeElement[JC] def baseURI: String
 SVGFEMergeNodeElement[JC] def before(nodes: Node | String*): Unit
 SVGFEMergeNodeElement[JC] def childElementCount: Int
 SVGFEMergeNodeElement[JC] def childNodes: NodeList[Node]
-SVGFEMergeNodeElement[JC] def children: HTMLCollection
+SVGFEMergeNodeElement[JC] def children: HTMLCollection[Element]
 SVGFEMergeNodeElement[JC] var classList: DOMTokenList
 SVGFEMergeNodeElement[JC] def clientHeight: Int
 SVGFEMergeNodeElement[JC] def clientLeft: Int
@@ -18210,9 +18210,9 @@ SVGFEMergeNodeElement[JC] def getAttributeNode(name: String): Attr
 SVGFEMergeNodeElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEMergeNodeElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEMergeNodeElement[JC] def getClientRects(): DOMRectList
-SVGFEMergeNodeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEMergeNodeElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEMergeNodeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEMergeNodeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEMergeNodeElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEMergeNodeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEMergeNodeElement[JC] def hasAttribute(name: String): Boolean
 SVGFEMergeNodeElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEMergeNodeElement[JC] def hasAttributes(): Boolean
@@ -18302,7 +18302,7 @@ SVGFEMorphologyElement[JC] def baseURI: String
 SVGFEMorphologyElement[JC] def before(nodes: Node | String*): Unit
 SVGFEMorphologyElement[JC] def childElementCount: Int
 SVGFEMorphologyElement[JC] def childNodes: NodeList[Node]
-SVGFEMorphologyElement[JC] def children: HTMLCollection
+SVGFEMorphologyElement[JC] def children: HTMLCollection[Element]
 SVGFEMorphologyElement[JC] var classList: DOMTokenList
 SVGFEMorphologyElement[JC] var className: SVGAnimatedString
 SVGFEMorphologyElement[JC] def clientHeight: Int
@@ -18321,9 +18321,9 @@ SVGFEMorphologyElement[JC] def getAttributeNode(name: String): Attr
 SVGFEMorphologyElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEMorphologyElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEMorphologyElement[JC] def getClientRects(): DOMRectList
-SVGFEMorphologyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEMorphologyElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEMorphologyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEMorphologyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEMorphologyElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEMorphologyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEMorphologyElement[JC] def hasAttribute(name: String): Boolean
 SVGFEMorphologyElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEMorphologyElement[JC] def hasAttributes(): Boolean
@@ -18425,7 +18425,7 @@ SVGFEOffsetElement[JC] def baseURI: String
 SVGFEOffsetElement[JC] def before(nodes: Node | String*): Unit
 SVGFEOffsetElement[JC] def childElementCount: Int
 SVGFEOffsetElement[JC] def childNodes: NodeList[Node]
-SVGFEOffsetElement[JC] def children: HTMLCollection
+SVGFEOffsetElement[JC] def children: HTMLCollection[Element]
 SVGFEOffsetElement[JC] var classList: DOMTokenList
 SVGFEOffsetElement[JC] var className: SVGAnimatedString
 SVGFEOffsetElement[JC] def clientHeight: Int
@@ -18446,9 +18446,9 @@ SVGFEOffsetElement[JC] def getAttributeNode(name: String): Attr
 SVGFEOffsetElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEOffsetElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEOffsetElement[JC] def getClientRects(): DOMRectList
-SVGFEOffsetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEOffsetElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEOffsetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEOffsetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEOffsetElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEOffsetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEOffsetElement[JC] def hasAttribute(name: String): Boolean
 SVGFEOffsetElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEOffsetElement[JC] def hasAttributes(): Boolean
@@ -18544,7 +18544,7 @@ SVGFEPointLightElement[JC] def baseURI: String
 SVGFEPointLightElement[JC] def before(nodes: Node | String*): Unit
 SVGFEPointLightElement[JC] def childElementCount: Int
 SVGFEPointLightElement[JC] def childNodes: NodeList[Node]
-SVGFEPointLightElement[JC] def children: HTMLCollection
+SVGFEPointLightElement[JC] def children: HTMLCollection[Element]
 SVGFEPointLightElement[JC] var classList: DOMTokenList
 SVGFEPointLightElement[JC] def clientHeight: Int
 SVGFEPointLightElement[JC] def clientLeft: Int
@@ -18562,9 +18562,9 @@ SVGFEPointLightElement[JC] def getAttributeNode(name: String): Attr
 SVGFEPointLightElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEPointLightElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEPointLightElement[JC] def getClientRects(): DOMRectList
-SVGFEPointLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEPointLightElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEPointLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEPointLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEPointLightElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEPointLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEPointLightElement[JC] def hasAttribute(name: String): Boolean
 SVGFEPointLightElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEPointLightElement[JC] def hasAttributes(): Boolean
@@ -18656,7 +18656,7 @@ SVGFESpecularLightingElement[JC] def baseURI: String
 SVGFESpecularLightingElement[JC] def before(nodes: Node | String*): Unit
 SVGFESpecularLightingElement[JC] def childElementCount: Int
 SVGFESpecularLightingElement[JC] def childNodes: NodeList[Node]
-SVGFESpecularLightingElement[JC] def children: HTMLCollection
+SVGFESpecularLightingElement[JC] def children: HTMLCollection[Element]
 SVGFESpecularLightingElement[JC] var classList: DOMTokenList
 SVGFESpecularLightingElement[JC] var className: SVGAnimatedString
 SVGFESpecularLightingElement[JC] def clientHeight: Int
@@ -18675,9 +18675,9 @@ SVGFESpecularLightingElement[JC] def getAttributeNode(name: String): Attr
 SVGFESpecularLightingElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFESpecularLightingElement[JC] def getBoundingClientRect(): DOMRect
 SVGFESpecularLightingElement[JC] def getClientRects(): DOMRectList
-SVGFESpecularLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFESpecularLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFESpecularLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFESpecularLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFESpecularLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFESpecularLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFESpecularLightingElement[JC] def hasAttribute(name: String): Boolean
 SVGFESpecularLightingElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFESpecularLightingElement[JC] def hasAttributes(): Boolean
@@ -18778,7 +18778,7 @@ SVGFESpotLightElement[JC] def baseURI: String
 SVGFESpotLightElement[JC] def before(nodes: Node | String*): Unit
 SVGFESpotLightElement[JC] def childElementCount: Int
 SVGFESpotLightElement[JC] def childNodes: NodeList[Node]
-SVGFESpotLightElement[JC] def children: HTMLCollection
+SVGFESpotLightElement[JC] def children: HTMLCollection[Element]
 SVGFESpotLightElement[JC] var classList: DOMTokenList
 SVGFESpotLightElement[JC] def clientHeight: Int
 SVGFESpotLightElement[JC] def clientLeft: Int
@@ -18796,9 +18796,9 @@ SVGFESpotLightElement[JC] def getAttributeNode(name: String): Attr
 SVGFESpotLightElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFESpotLightElement[JC] def getBoundingClientRect(): DOMRect
 SVGFESpotLightElement[JC] def getClientRects(): DOMRectList
-SVGFESpotLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFESpotLightElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFESpotLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFESpotLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFESpotLightElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFESpotLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFESpotLightElement[JC] def hasAttribute(name: String): Boolean
 SVGFESpotLightElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFESpotLightElement[JC] def hasAttributes(): Boolean
@@ -18895,7 +18895,7 @@ SVGFETileElement[JC] def baseURI: String
 SVGFETileElement[JC] def before(nodes: Node | String*): Unit
 SVGFETileElement[JC] def childElementCount: Int
 SVGFETileElement[JC] def childNodes: NodeList[Node]
-SVGFETileElement[JC] def children: HTMLCollection
+SVGFETileElement[JC] def children: HTMLCollection[Element]
 SVGFETileElement[JC] var classList: DOMTokenList
 SVGFETileElement[JC] var className: SVGAnimatedString
 SVGFETileElement[JC] def clientHeight: Int
@@ -18914,9 +18914,9 @@ SVGFETileElement[JC] def getAttributeNode(name: String): Attr
 SVGFETileElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFETileElement[JC] def getBoundingClientRect(): DOMRect
 SVGFETileElement[JC] def getClientRects(): DOMRectList
-SVGFETileElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFETileElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFETileElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFETileElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFETileElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFETileElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFETileElement[JC] def hasAttribute(name: String): Boolean
 SVGFETileElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFETileElement[JC] def hasAttributes(): Boolean
@@ -19014,7 +19014,7 @@ SVGFETurbulenceElement[JC] def baseURI: String
 SVGFETurbulenceElement[JC] def before(nodes: Node | String*): Unit
 SVGFETurbulenceElement[JC] def childElementCount: Int
 SVGFETurbulenceElement[JC] def childNodes: NodeList[Node]
-SVGFETurbulenceElement[JC] def children: HTMLCollection
+SVGFETurbulenceElement[JC] def children: HTMLCollection[Element]
 SVGFETurbulenceElement[JC] var classList: DOMTokenList
 SVGFETurbulenceElement[JC] var className: SVGAnimatedString
 SVGFETurbulenceElement[JC] def clientHeight: Int
@@ -19033,9 +19033,9 @@ SVGFETurbulenceElement[JC] def getAttributeNode(name: String): Attr
 SVGFETurbulenceElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFETurbulenceElement[JC] def getBoundingClientRect(): DOMRect
 SVGFETurbulenceElement[JC] def getClientRects(): DOMRectList
-SVGFETurbulenceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFETurbulenceElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFETurbulenceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFETurbulenceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFETurbulenceElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFETurbulenceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFETurbulenceElement[JC] def hasAttribute(name: String): Boolean
 SVGFETurbulenceElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFETurbulenceElement[JC] def hasAttributes(): Boolean
@@ -19143,7 +19143,7 @@ SVGFilterElement[JC] def baseURI: String
 SVGFilterElement[JC] def before(nodes: Node | String*): Unit
 SVGFilterElement[JC] def childElementCount: Int
 SVGFilterElement[JC] def childNodes: NodeList[Node]
-SVGFilterElement[JC] def children: HTMLCollection
+SVGFilterElement[JC] def children: HTMLCollection[Element]
 SVGFilterElement[JC] var classList: DOMTokenList
 SVGFilterElement[JC] var className: SVGAnimatedString
 SVGFilterElement[JC] def clientHeight: Int
@@ -19166,9 +19166,9 @@ SVGFilterElement[JC] def getAttributeNode(name: String): Attr
 SVGFilterElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFilterElement[JC] def getBoundingClientRect(): DOMRect
 SVGFilterElement[JC] def getClientRects(): DOMRectList
-SVGFilterElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFilterElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFilterElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFilterElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFilterElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFilterElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFilterElement[JC] def hasAttribute(name: String): Boolean
 SVGFilterElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFilterElement[JC] def hasAttributes(): Boolean
@@ -19276,7 +19276,7 @@ SVGGElement[JC] def baseURI: String
 SVGGElement[JC] def before(nodes: Node | String*): Unit
 SVGGElement[JC] def childElementCount: Int
 SVGGElement[JC] def childNodes: NodeList[Node]
-SVGGElement[JC] def children: HTMLCollection
+SVGGElement[JC] def children: HTMLCollection[Element]
 SVGGElement[JC] var classList: DOMTokenList
 SVGGElement[JC] var className: SVGAnimatedString
 SVGGElement[JC] def clientHeight: Int
@@ -19299,9 +19299,9 @@ SVGGElement[JC] def getBBox(): SVGRect
 SVGGElement[JC] def getBoundingClientRect(): DOMRect
 SVGGElement[JC] def getCTM(): SVGMatrix
 SVGGElement[JC] def getClientRects(): DOMRectList
-SVGGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGGElement[JC] def getScreenCTM(): SVGMatrix
 SVGGElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGGElement[JC] def hasAttribute(name: String): Boolean
@@ -19404,7 +19404,7 @@ SVGGradientElement[JC] def baseURI: String
 SVGGradientElement[JC] def before(nodes: Node | String*): Unit
 SVGGradientElement[JC] def childElementCount: Int
 SVGGradientElement[JC] def childNodes: NodeList[Node]
-SVGGradientElement[JC] def children: HTMLCollection
+SVGGradientElement[JC] def children: HTMLCollection[Element]
 SVGGradientElement[JC] var classList: DOMTokenList
 SVGGradientElement[JC] var className: SVGAnimatedString
 SVGGradientElement[JC] def clientHeight: Int
@@ -19424,9 +19424,9 @@ SVGGradientElement[JC] def getAttributeNode(name: String): Attr
 SVGGradientElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGGradientElement[JC] def getBoundingClientRect(): DOMRect
 SVGGradientElement[JC] def getClientRects(): DOMRectList
-SVGGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGGradientElement[JC] def gradientTransform: SVGAnimatedTransformList
 SVGGradientElement[JC] def gradientUnits: SVGAnimatedEnumeration
 SVGGradientElement[JC] def hasAttribute(name: String): Boolean
@@ -19524,7 +19524,7 @@ SVGImageElement[JC] def baseURI: String
 SVGImageElement[JC] def before(nodes: Node | String*): Unit
 SVGImageElement[JC] def childElementCount: Int
 SVGImageElement[JC] def childNodes: NodeList[Node]
-SVGImageElement[JC] def children: HTMLCollection
+SVGImageElement[JC] def children: HTMLCollection[Element]
 SVGImageElement[JC] var classList: DOMTokenList
 SVGImageElement[JC] var className: SVGAnimatedString
 SVGImageElement[JC] def clientHeight: Int
@@ -19547,9 +19547,9 @@ SVGImageElement[JC] def getBBox(): SVGRect
 SVGImageElement[JC] def getBoundingClientRect(): DOMRect
 SVGImageElement[JC] def getCTM(): SVGMatrix
 SVGImageElement[JC] def getClientRects(): DOMRectList
-SVGImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGImageElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGImageElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGImageElement[JC] def getScreenCTM(): SVGMatrix
 SVGImageElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGImageElement[JC] def hasAttribute(name: String): Boolean
@@ -19682,7 +19682,7 @@ SVGLineElement[JC] def baseURI: String
 SVGLineElement[JC] def before(nodes: Node | String*): Unit
 SVGLineElement[JC] def childElementCount: Int
 SVGLineElement[JC] def childNodes: NodeList[Node]
-SVGLineElement[JC] def children: HTMLCollection
+SVGLineElement[JC] def children: HTMLCollection[Element]
 SVGLineElement[JC] var classList: DOMTokenList
 SVGLineElement[JC] var className: SVGAnimatedString
 SVGLineElement[JC] def clientHeight: Int
@@ -19705,9 +19705,9 @@ SVGLineElement[JC] def getBBox(): SVGRect
 SVGLineElement[JC] def getBoundingClientRect(): DOMRect
 SVGLineElement[JC] def getCTM(): SVGMatrix
 SVGLineElement[JC] def getClientRects(): DOMRectList
-SVGLineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGLineElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGLineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGLineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGLineElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGLineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGLineElement[JC] def getScreenCTM(): SVGMatrix
 SVGLineElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGLineElement[JC] def hasAttribute(name: String): Boolean
@@ -19814,7 +19814,7 @@ SVGLinearGradientElement[JC] def baseURI: String
 SVGLinearGradientElement[JC] def before(nodes: Node | String*): Unit
 SVGLinearGradientElement[JC] def childElementCount: Int
 SVGLinearGradientElement[JC] def childNodes: NodeList[Node]
-SVGLinearGradientElement[JC] def children: HTMLCollection
+SVGLinearGradientElement[JC] def children: HTMLCollection[Element]
 SVGLinearGradientElement[JC] var classList: DOMTokenList
 SVGLinearGradientElement[JC] var className: SVGAnimatedString
 SVGLinearGradientElement[JC] def clientHeight: Int
@@ -19834,9 +19834,9 @@ SVGLinearGradientElement[JC] def getAttributeNode(name: String): Attr
 SVGLinearGradientElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGLinearGradientElement[JC] def getBoundingClientRect(): DOMRect
 SVGLinearGradientElement[JC] def getClientRects(): DOMRectList
-SVGLinearGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGLinearGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGLinearGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGLinearGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGLinearGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGLinearGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGLinearGradientElement[JC] def gradientTransform: SVGAnimatedTransformList
 SVGLinearGradientElement[JC] def gradientUnits: SVGAnimatedEnumeration
 SVGLinearGradientElement[JC] def hasAttribute(name: String): Boolean
@@ -19940,7 +19940,7 @@ SVGMarkerElement[JC] def baseURI: String
 SVGMarkerElement[JC] def before(nodes: Node | String*): Unit
 SVGMarkerElement[JC] def childElementCount: Int
 SVGMarkerElement[JC] def childNodes: NodeList[Node]
-SVGMarkerElement[JC] def children: HTMLCollection
+SVGMarkerElement[JC] def children: HTMLCollection[Element]
 SVGMarkerElement[JC] var classList: DOMTokenList
 SVGMarkerElement[JC] var className: SVGAnimatedString
 SVGMarkerElement[JC] def clientHeight: Int
@@ -19960,9 +19960,9 @@ SVGMarkerElement[JC] def getAttributeNode(name: String): Attr
 SVGMarkerElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGMarkerElement[JC] def getBoundingClientRect(): DOMRect
 SVGMarkerElement[JC] def getClientRects(): DOMRectList
-SVGMarkerElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGMarkerElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGMarkerElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGMarkerElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGMarkerElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGMarkerElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGMarkerElement[JC] def hasAttribute(name: String): Boolean
 SVGMarkerElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGMarkerElement[JC] def hasAttributes(): Boolean
@@ -20074,7 +20074,7 @@ SVGMaskElement[JC] def baseURI: String
 SVGMaskElement[JC] def before(nodes: Node | String*): Unit
 SVGMaskElement[JC] def childElementCount: Int
 SVGMaskElement[JC] def childNodes: NodeList[Node]
-SVGMaskElement[JC] def children: HTMLCollection
+SVGMaskElement[JC] def children: HTMLCollection[Element]
 SVGMaskElement[JC] var classList: DOMTokenList
 SVGMaskElement[JC] var className: SVGAnimatedString
 SVGMaskElement[JC] def clientHeight: Int
@@ -20094,9 +20094,9 @@ SVGMaskElement[JC] def getAttributeNode(name: String): Attr
 SVGMaskElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGMaskElement[JC] def getBoundingClientRect(): DOMRect
 SVGMaskElement[JC] def getClientRects(): DOMRectList
-SVGMaskElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGMaskElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGMaskElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGMaskElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGMaskElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGMaskElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGMaskElement[JC] def hasAttribute(name: String): Boolean
 SVGMaskElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGMaskElement[JC] def hasAttributes(): Boolean
@@ -20215,7 +20215,7 @@ SVGMetadataElement[JC] def baseURI: String
 SVGMetadataElement[JC] def before(nodes: Node | String*): Unit
 SVGMetadataElement[JC] def childElementCount: Int
 SVGMetadataElement[JC] def childNodes: NodeList[Node]
-SVGMetadataElement[JC] def children: HTMLCollection
+SVGMetadataElement[JC] def children: HTMLCollection[Element]
 SVGMetadataElement[JC] var classList: DOMTokenList
 SVGMetadataElement[JC] def clientHeight: Int
 SVGMetadataElement[JC] def clientLeft: Int
@@ -20233,9 +20233,9 @@ SVGMetadataElement[JC] def getAttributeNode(name: String): Attr
 SVGMetadataElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGMetadataElement[JC] def getBoundingClientRect(): DOMRect
 SVGMetadataElement[JC] def getClientRects(): DOMRectList
-SVGMetadataElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGMetadataElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGMetadataElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGMetadataElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGMetadataElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGMetadataElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGMetadataElement[JC] def hasAttribute(name: String): Boolean
 SVGMetadataElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGMetadataElement[JC] def hasAttributes(): Boolean
@@ -20333,7 +20333,7 @@ SVGPathElement[JC] def baseURI: String
 SVGPathElement[JC] def before(nodes: Node | String*): Unit
 SVGPathElement[JC] def childElementCount: Int
 SVGPathElement[JC] def childNodes: NodeList[Node]
-SVGPathElement[JC] def children: HTMLCollection
+SVGPathElement[JC] def children: HTMLCollection[Element]
 SVGPathElement[JC] var classList: DOMTokenList
 SVGPathElement[JC] var className: SVGAnimatedString
 SVGPathElement[JC] def clientHeight: Int
@@ -20375,9 +20375,9 @@ SVGPathElement[JC] def getBBox(): SVGRect
 SVGPathElement[JC] def getBoundingClientRect(): DOMRect
 SVGPathElement[JC] def getCTM(): SVGMatrix
 SVGPathElement[JC] def getClientRects(): DOMRectList
-SVGPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPathElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPathElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPathElement[JC] def getPathSegAtLength(distance: Double): Int
 SVGPathElement[JC] def getPointAtLength(distance: Double): SVGPoint
 SVGPathElement[JC] def getScreenCTM(): SVGMatrix
@@ -20610,7 +20610,7 @@ SVGPatternElement[JC] def baseURI: String
 SVGPatternElement[JC] def before(nodes: Node | String*): Unit
 SVGPatternElement[JC] def childElementCount: Int
 SVGPatternElement[JC] def childNodes: NodeList[Node]
-SVGPatternElement[JC] def children: HTMLCollection
+SVGPatternElement[JC] def children: HTMLCollection[Element]
 SVGPatternElement[JC] var classList: DOMTokenList
 SVGPatternElement[JC] var className: SVGAnimatedString
 SVGPatternElement[JC] def clientHeight: Int
@@ -20630,9 +20630,9 @@ SVGPatternElement[JC] def getAttributeNode(name: String): Attr
 SVGPatternElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGPatternElement[JC] def getBoundingClientRect(): DOMRect
 SVGPatternElement[JC] def getClientRects(): DOMRectList
-SVGPatternElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPatternElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPatternElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPatternElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPatternElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPatternElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPatternElement[JC] def hasAttribute(name: String): Boolean
 SVGPatternElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGPatternElement[JC] def hasAttributes(): Boolean
@@ -20750,7 +20750,7 @@ SVGPolygonElement[JC] def baseURI: String
 SVGPolygonElement[JC] def before(nodes: Node | String*): Unit
 SVGPolygonElement[JC] def childElementCount: Int
 SVGPolygonElement[JC] def childNodes: NodeList[Node]
-SVGPolygonElement[JC] def children: HTMLCollection
+SVGPolygonElement[JC] def children: HTMLCollection[Element]
 SVGPolygonElement[JC] var classList: DOMTokenList
 SVGPolygonElement[JC] var className: SVGAnimatedString
 SVGPolygonElement[JC] def clientHeight: Int
@@ -20773,9 +20773,9 @@ SVGPolygonElement[JC] def getBBox(): SVGRect
 SVGPolygonElement[JC] def getBoundingClientRect(): DOMRect
 SVGPolygonElement[JC] def getCTM(): SVGMatrix
 SVGPolygonElement[JC] def getClientRects(): DOMRectList
-SVGPolygonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPolygonElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPolygonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPolygonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPolygonElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPolygonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPolygonElement[JC] def getScreenCTM(): SVGMatrix
 SVGPolygonElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGPolygonElement[JC] def hasAttribute(name: String): Boolean
@@ -20877,7 +20877,7 @@ SVGPolylineElement[JC] def baseURI: String
 SVGPolylineElement[JC] def before(nodes: Node | String*): Unit
 SVGPolylineElement[JC] def childElementCount: Int
 SVGPolylineElement[JC] def childNodes: NodeList[Node]
-SVGPolylineElement[JC] def children: HTMLCollection
+SVGPolylineElement[JC] def children: HTMLCollection[Element]
 SVGPolylineElement[JC] var classList: DOMTokenList
 SVGPolylineElement[JC] var className: SVGAnimatedString
 SVGPolylineElement[JC] def clientHeight: Int
@@ -20900,9 +20900,9 @@ SVGPolylineElement[JC] def getBBox(): SVGRect
 SVGPolylineElement[JC] def getBoundingClientRect(): DOMRect
 SVGPolylineElement[JC] def getCTM(): SVGMatrix
 SVGPolylineElement[JC] def getClientRects(): DOMRectList
-SVGPolylineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPolylineElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPolylineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPolylineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPolylineElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPolylineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPolylineElement[JC] def getScreenCTM(): SVGMatrix
 SVGPolylineElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGPolylineElement[JC] def hasAttribute(name: String): Boolean
@@ -21022,7 +21022,7 @@ SVGRadialGradientElement[JC] def baseURI: String
 SVGRadialGradientElement[JC] def before(nodes: Node | String*): Unit
 SVGRadialGradientElement[JC] def childElementCount: Int
 SVGRadialGradientElement[JC] def childNodes: NodeList[Node]
-SVGRadialGradientElement[JC] def children: HTMLCollection
+SVGRadialGradientElement[JC] def children: HTMLCollection[Element]
 SVGRadialGradientElement[JC] var classList: DOMTokenList
 SVGRadialGradientElement[JC] var className: SVGAnimatedString
 SVGRadialGradientElement[JC] def clientHeight: Int
@@ -21046,9 +21046,9 @@ SVGRadialGradientElement[JC] def getAttributeNode(name: String): Attr
 SVGRadialGradientElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGRadialGradientElement[JC] def getBoundingClientRect(): DOMRect
 SVGRadialGradientElement[JC] def getClientRects(): DOMRectList
-SVGRadialGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGRadialGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGRadialGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGRadialGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGRadialGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGRadialGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGRadialGradientElement[JC] def gradientTransform: SVGAnimatedTransformList
 SVGRadialGradientElement[JC] def gradientUnits: SVGAnimatedEnumeration
 SVGRadialGradientElement[JC] def hasAttribute(name: String): Boolean
@@ -21147,7 +21147,7 @@ SVGRectElement[JC] def baseURI: String
 SVGRectElement[JC] def before(nodes: Node | String*): Unit
 SVGRectElement[JC] def childElementCount: Int
 SVGRectElement[JC] def childNodes: NodeList[Node]
-SVGRectElement[JC] def children: HTMLCollection
+SVGRectElement[JC] def children: HTMLCollection[Element]
 SVGRectElement[JC] var classList: DOMTokenList
 SVGRectElement[JC] var className: SVGAnimatedString
 SVGRectElement[JC] def clientHeight: Int
@@ -21170,9 +21170,9 @@ SVGRectElement[JC] def getBBox(): SVGRect
 SVGRectElement[JC] def getBoundingClientRect(): DOMRect
 SVGRectElement[JC] def getCTM(): SVGMatrix
 SVGRectElement[JC] def getClientRects(): DOMRectList
-SVGRectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGRectElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGRectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGRectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGRectElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGRectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGRectElement[JC] def getScreenCTM(): SVGMatrix
 SVGRectElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGRectElement[JC] def hasAttribute(name: String): Boolean
@@ -21280,7 +21280,7 @@ SVGSVGElement[JC] def checkEnclosure(element: SVGElement, rect: SVGRect): Boolea
 SVGSVGElement[JC] def checkIntersection(element: SVGElement, rect: SVGRect): Boolean
 SVGSVGElement[JC] def childElementCount: Int
 SVGSVGElement[JC] def childNodes: NodeList[Node]
-SVGSVGElement[JC] def children: HTMLCollection
+SVGSVGElement[JC] def children: HTMLCollection[Element]
 SVGSVGElement[JC] var classList: DOMTokenList
 SVGSVGElement[JC] var className: SVGAnimatedString
 SVGSVGElement[JC] def clientHeight: Int
@@ -21321,9 +21321,9 @@ SVGSVGElement[JC] def getClientRects(): DOMRectList
 SVGSVGElement[JC] def getComputedStyle(elt: Element, pseudoElt: String?): CSSStyleDeclaration
 SVGSVGElement[JC] def getCurrentTime(): Int
 SVGSVGElement[JC] def getElementById(elementId: String): Element
-SVGSVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGSVGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGSVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGSVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGSVGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGSVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGSVGElement[JC] def getEnclosureList(rect: SVGRect, referenceElement: SVGElement): NodeList[Node]
 SVGSVGElement[JC] def getIntersectionList(rect: SVGRect, referenceElement: SVGElement): NodeList[Node]
 SVGSVGElement[JC] def getScreenCTM(): SVGMatrix
@@ -21448,7 +21448,7 @@ SVGScriptElement[JC] def baseURI: String
 SVGScriptElement[JC] def before(nodes: Node | String*): Unit
 SVGScriptElement[JC] def childElementCount: Int
 SVGScriptElement[JC] def childNodes: NodeList[Node]
-SVGScriptElement[JC] def children: HTMLCollection
+SVGScriptElement[JC] def children: HTMLCollection[Element]
 SVGScriptElement[JC] var classList: DOMTokenList
 SVGScriptElement[JC] def clientHeight: Int
 SVGScriptElement[JC] def clientLeft: Int
@@ -21467,9 +21467,9 @@ SVGScriptElement[JC] def getAttributeNode(name: String): Attr
 SVGScriptElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGScriptElement[JC] def getBoundingClientRect(): DOMRect
 SVGScriptElement[JC] def getClientRects(): DOMRectList
-SVGScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGScriptElement[JC] def hasAttribute(name: String): Boolean
 SVGScriptElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGScriptElement[JC] def hasAttributes(): Boolean
@@ -21560,7 +21560,7 @@ SVGStopElement[JC] def baseURI: String
 SVGStopElement[JC] def before(nodes: Node | String*): Unit
 SVGStopElement[JC] def childElementCount: Int
 SVGStopElement[JC] def childNodes: NodeList[Node]
-SVGStopElement[JC] def children: HTMLCollection
+SVGStopElement[JC] def children: HTMLCollection[Element]
 SVGStopElement[JC] var classList: DOMTokenList
 SVGStopElement[JC] var className: SVGAnimatedString
 SVGStopElement[JC] def clientHeight: Int
@@ -21579,9 +21579,9 @@ SVGStopElement[JC] def getAttributeNode(name: String): Attr
 SVGStopElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGStopElement[JC] def getBoundingClientRect(): DOMRect
 SVGStopElement[JC] def getClientRects(): DOMRectList
-SVGStopElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGStopElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGStopElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGStopElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGStopElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGStopElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGStopElement[JC] def hasAttribute(name: String): Boolean
 SVGStopElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGStopElement[JC] def hasAttributes(): Boolean
@@ -21682,7 +21682,7 @@ SVGStyleElement[JC] def baseURI: String
 SVGStyleElement[JC] def before(nodes: Node | String*): Unit
 SVGStyleElement[JC] def childElementCount: Int
 SVGStyleElement[JC] def childNodes: NodeList[Node]
-SVGStyleElement[JC] def children: HTMLCollection
+SVGStyleElement[JC] def children: HTMLCollection[Element]
 SVGStyleElement[JC] var classList: DOMTokenList
 SVGStyleElement[JC] def clientHeight: Int
 SVGStyleElement[JC] def clientLeft: Int
@@ -21700,9 +21700,9 @@ SVGStyleElement[JC] def getAttributeNode(name: String): Attr
 SVGStyleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGStyleElement[JC] def getBoundingClientRect(): DOMRect
 SVGStyleElement[JC] def getClientRects(): DOMRectList
-SVGStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGStyleElement[JC] def hasAttribute(name: String): Boolean
 SVGStyleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGStyleElement[JC] def hasAttributes(): Boolean
@@ -21796,7 +21796,7 @@ SVGSwitchElement[JC] def baseURI: String
 SVGSwitchElement[JC] def before(nodes: Node | String*): Unit
 SVGSwitchElement[JC] def childElementCount: Int
 SVGSwitchElement[JC] def childNodes: NodeList[Node]
-SVGSwitchElement[JC] def children: HTMLCollection
+SVGSwitchElement[JC] def children: HTMLCollection[Element]
 SVGSwitchElement[JC] var classList: DOMTokenList
 SVGSwitchElement[JC] var className: SVGAnimatedString
 SVGSwitchElement[JC] def clientHeight: Int
@@ -21819,9 +21819,9 @@ SVGSwitchElement[JC] def getBBox(): SVGRect
 SVGSwitchElement[JC] def getBoundingClientRect(): DOMRect
 SVGSwitchElement[JC] def getCTM(): SVGMatrix
 SVGSwitchElement[JC] def getClientRects(): DOMRectList
-SVGSwitchElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGSwitchElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGSwitchElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGSwitchElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGSwitchElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGSwitchElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGSwitchElement[JC] def getScreenCTM(): SVGMatrix
 SVGSwitchElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGSwitchElement[JC] def hasAttribute(name: String): Boolean
@@ -21921,7 +21921,7 @@ SVGSymbolElement[JC] def baseURI: String
 SVGSymbolElement[JC] def before(nodes: Node | String*): Unit
 SVGSymbolElement[JC] def childElementCount: Int
 SVGSymbolElement[JC] def childNodes: NodeList[Node]
-SVGSymbolElement[JC] def children: HTMLCollection
+SVGSymbolElement[JC] def children: HTMLCollection[Element]
 SVGSymbolElement[JC] var classList: DOMTokenList
 SVGSymbolElement[JC] var className: SVGAnimatedString
 SVGSymbolElement[JC] def clientHeight: Int
@@ -21941,9 +21941,9 @@ SVGSymbolElement[JC] def getAttributeNode(name: String): Attr
 SVGSymbolElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGSymbolElement[JC] def getBoundingClientRect(): DOMRect
 SVGSymbolElement[JC] def getClientRects(): DOMRectList
-SVGSymbolElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGSymbolElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGSymbolElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGSymbolElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGSymbolElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGSymbolElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGSymbolElement[JC] def hasAttribute(name: String): Boolean
 SVGSymbolElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGSymbolElement[JC] def hasAttributes(): Boolean
@@ -22037,7 +22037,7 @@ SVGTSpanElement[JC] def baseURI: String
 SVGTSpanElement[JC] def before(nodes: Node | String*): Unit
 SVGTSpanElement[JC] def childElementCount: Int
 SVGTSpanElement[JC] def childNodes: NodeList[Node]
-SVGTSpanElement[JC] def children: HTMLCollection
+SVGTSpanElement[JC] def children: HTMLCollection[Element]
 SVGTSpanElement[JC] var classList: DOMTokenList
 SVGTSpanElement[JC] var className: SVGAnimatedString
 SVGTSpanElement[JC] def clientHeight: Int
@@ -22061,9 +22061,9 @@ SVGTSpanElement[JC] def getBoundingClientRect(): DOMRect
 SVGTSpanElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTSpanElement[JC] def getClientRects(): DOMRectList
 SVGTSpanElement[JC] def getComputedTextLength(): Double
-SVGTSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTSpanElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTSpanElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTSpanElement[JC] def getNumberOfChars(): Int
@@ -22175,7 +22175,7 @@ SVGTextContentElement[JC] def baseURI: String
 SVGTextContentElement[JC] def before(nodes: Node | String*): Unit
 SVGTextContentElement[JC] def childElementCount: Int
 SVGTextContentElement[JC] def childNodes: NodeList[Node]
-SVGTextContentElement[JC] def children: HTMLCollection
+SVGTextContentElement[JC] def children: HTMLCollection[Element]
 SVGTextContentElement[JC] var classList: DOMTokenList
 SVGTextContentElement[JC] var className: SVGAnimatedString
 SVGTextContentElement[JC] def clientHeight: Int
@@ -22197,9 +22197,9 @@ SVGTextContentElement[JC] def getBoundingClientRect(): DOMRect
 SVGTextContentElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextContentElement[JC] def getClientRects(): DOMRectList
 SVGTextContentElement[JC] def getComputedTextLength(): Double
-SVGTextContentElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextContentElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextContentElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextContentElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextContentElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextContentElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextContentElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextContentElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextContentElement[JC] def getNumberOfChars(): Int
@@ -22307,7 +22307,7 @@ SVGTextElement[JC] def baseURI: String
 SVGTextElement[JC] def before(nodes: Node | String*): Unit
 SVGTextElement[JC] def childElementCount: Int
 SVGTextElement[JC] def childNodes: NodeList[Node]
-SVGTextElement[JC] def children: HTMLCollection
+SVGTextElement[JC] def children: HTMLCollection[Element]
 SVGTextElement[JC] var classList: DOMTokenList
 SVGTextElement[JC] var className: SVGAnimatedString
 SVGTextElement[JC] def clientHeight: Int
@@ -22334,9 +22334,9 @@ SVGTextElement[JC] def getCTM(): SVGMatrix
 SVGTextElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextElement[JC] def getClientRects(): DOMRectList
 SVGTextElement[JC] def getComputedTextLength(): Double
-SVGTextElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextElement[JC] def getNumberOfChars(): Int
@@ -22448,7 +22448,7 @@ SVGTextPathElement[JC] def baseURI: String
 SVGTextPathElement[JC] def before(nodes: Node | String*): Unit
 SVGTextPathElement[JC] def childElementCount: Int
 SVGTextPathElement[JC] def childNodes: NodeList[Node]
-SVGTextPathElement[JC] def children: HTMLCollection
+SVGTextPathElement[JC] def children: HTMLCollection[Element]
 SVGTextPathElement[JC] var classList: DOMTokenList
 SVGTextPathElement[JC] var className: SVGAnimatedString
 SVGTextPathElement[JC] def clientHeight: Int
@@ -22470,9 +22470,9 @@ SVGTextPathElement[JC] def getBoundingClientRect(): DOMRect
 SVGTextPathElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextPathElement[JC] def getClientRects(): DOMRectList
 SVGTextPathElement[JC] def getComputedTextLength(): Double
-SVGTextPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextPathElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextPathElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextPathElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextPathElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextPathElement[JC] def getNumberOfChars(): Int
@@ -22587,7 +22587,7 @@ SVGTextPositioningElement[JC] def baseURI: String
 SVGTextPositioningElement[JC] def before(nodes: Node | String*): Unit
 SVGTextPositioningElement[JC] def childElementCount: Int
 SVGTextPositioningElement[JC] def childNodes: NodeList[Node]
-SVGTextPositioningElement[JC] def children: HTMLCollection
+SVGTextPositioningElement[JC] def children: HTMLCollection[Element]
 SVGTextPositioningElement[JC] var classList: DOMTokenList
 SVGTextPositioningElement[JC] var className: SVGAnimatedString
 SVGTextPositioningElement[JC] def clientHeight: Int
@@ -22611,9 +22611,9 @@ SVGTextPositioningElement[JC] def getBoundingClientRect(): DOMRect
 SVGTextPositioningElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextPositioningElement[JC] def getClientRects(): DOMRectList
 SVGTextPositioningElement[JC] def getComputedTextLength(): Double
-SVGTextPositioningElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextPositioningElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextPositioningElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextPositioningElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextPositioningElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextPositioningElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextPositioningElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextPositioningElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextPositioningElement[JC] def getNumberOfChars(): Int
@@ -22721,7 +22721,7 @@ SVGTitleElement[JC] def baseURI: String
 SVGTitleElement[JC] def before(nodes: Node | String*): Unit
 SVGTitleElement[JC] def childElementCount: Int
 SVGTitleElement[JC] def childNodes: NodeList[Node]
-SVGTitleElement[JC] def children: HTMLCollection
+SVGTitleElement[JC] def children: HTMLCollection[Element]
 SVGTitleElement[JC] var classList: DOMTokenList
 SVGTitleElement[JC] var className: SVGAnimatedString
 SVGTitleElement[JC] def clientHeight: Int
@@ -22740,9 +22740,9 @@ SVGTitleElement[JC] def getAttributeNode(name: String): Attr
 SVGTitleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGTitleElement[JC] def getBoundingClientRect(): DOMRect
 SVGTitleElement[JC] def getClientRects(): DOMRectList
-SVGTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTitleElement[JC] def hasAttribute(name: String): Boolean
 SVGTitleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGTitleElement[JC] def hasAttributes(): Boolean
@@ -22875,7 +22875,7 @@ SVGUseElement[JC] def baseURI: String
 SVGUseElement[JC] def before(nodes: Node | String*): Unit
 SVGUseElement[JC] def childElementCount: Int
 SVGUseElement[JC] def childNodes: NodeList[Node]
-SVGUseElement[JC] def children: HTMLCollection
+SVGUseElement[JC] def children: HTMLCollection[Element]
 SVGUseElement[JC] var classList: DOMTokenList
 SVGUseElement[JC] var className: SVGAnimatedString
 SVGUseElement[JC] def clientHeight: Int
@@ -22898,9 +22898,9 @@ SVGUseElement[JC] def getBBox(): SVGRect
 SVGUseElement[JC] def getBoundingClientRect(): DOMRect
 SVGUseElement[JC] def getCTM(): SVGMatrix
 SVGUseElement[JC] def getClientRects(): DOMRectList
-SVGUseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGUseElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGUseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGUseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGUseElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGUseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGUseElement[JC] def getScreenCTM(): SVGMatrix
 SVGUseElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGUseElement[JC] def hasAttribute(name: String): Boolean
@@ -23006,7 +23006,7 @@ SVGViewElement[JC] def baseURI: String
 SVGViewElement[JC] def before(nodes: Node | String*): Unit
 SVGViewElement[JC] def childElementCount: Int
 SVGViewElement[JC] def childNodes: NodeList[Node]
-SVGViewElement[JC] def children: HTMLCollection
+SVGViewElement[JC] def children: HTMLCollection[Element]
 SVGViewElement[JC] var classList: DOMTokenList
 SVGViewElement[JC] def clientHeight: Int
 SVGViewElement[JC] def clientLeft: Int
@@ -23025,9 +23025,9 @@ SVGViewElement[JC] def getAttributeNode(name: String): Attr
 SVGViewElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGViewElement[JC] def getBoundingClientRect(): DOMRect
 SVGViewElement[JC] def getClientRects(): DOMRectList
-SVGViewElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGViewElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGViewElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGViewElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGViewElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGViewElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGViewElement[JC] def hasAttribute(name: String): Boolean
 SVGViewElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGViewElement[JC] def hasAttributes(): Boolean
@@ -25786,7 +25786,7 @@ html[SO] type Base = HTMLBaseElement
 html[SO] type Body = HTMLBodyElement
 html[SO] type Button = HTMLButtonElement
 html[SO] type Canvas = HTMLCanvasElement
-html[SO] type Collection = HTMLCollection
+html[SO] type Collection[E <: Element] = HTMLCollection[E]
 html[SO] type DList = HTMLDListElement
 html[SO] type DataList = HTMLDataListElement
 html[SO] type Div = HTMLDivElement
@@ -25972,7 +25972,7 @@ raw[SO] type HTMLBaseElement = dom.HTMLBaseElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLBodyElement = dom.HTMLBodyElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLButtonElement = dom.HTMLButtonElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLCanvasElement = dom.HTMLCanvasElement  (@deprecated in 2.0.0)
-raw[SO] type HTMLCollectionElement = dom.HTMLCollection  (@deprecated in 2.0.0)
+raw[SO] type HTMLCollectionElement[E <: dom.Element] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
 raw[SO] type HTMLDListElement = dom.HTMLDListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDataListElement = dom.HTMLDataListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDivElement = dom.HTMLDivElement  (@deprecated in 2.0.0)
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index 4d6626e48..657c1755b 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -1311,7 +1311,7 @@ Document[JC] def baseURI: String
 Document[JC] def characterSet: String
 Document[JC] def childElementCount: Int
 Document[JC] def childNodes: NodeList[Node]
-Document[JC] def children: HTMLCollection
+Document[JC] def children: HTMLCollection[Element]
 Document[JC] def cloneNode(deep: Boolean?): Node
 Document[JC] def compareDocumentPosition(other: Node): Int
 Document[JC] def contains(otherNode: Node): Boolean
@@ -1344,10 +1344,10 @@ Document[JC] def firstElementChild: Element
 Document[JC] def fullscreenElement: Element
 Document[JC] def fullscreenEnabled: Boolean
 Document[JC] def getElementById(elementId: String): Element
-Document[JC] def getElementsByClassName(classNames: String): HTMLCollection
+Document[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
 Document[JC] def getElementsByName(elementName: String): NodeList[Node]
-Document[JC] def getElementsByTagName(name: String): HTMLCollection
-Document[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+Document[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+Document[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 Document[JC] def hasAttributes(): Boolean
 Document[JC] def hasChildNodes(): Boolean
 Document[JC] def hidden: Boolean
@@ -1544,7 +1544,7 @@ Element[JC] def baseURI: String
 Element[JC] def before(nodes: Node | String*): Unit
 Element[JC] def childElementCount: Int
 Element[JC] def childNodes: NodeList[Node]
-Element[JC] def children: HTMLCollection
+Element[JC] def children: HTMLCollection[Element]
 Element[JC] var classList: DOMTokenList
 Element[JC] def clientHeight: Int
 Element[JC] def clientLeft: Int
@@ -1562,9 +1562,9 @@ Element[JC] def getAttributeNode(name: String): Attr
 Element[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 Element[JC] def getBoundingClientRect(): DOMRect
 Element[JC] def getClientRects(): DOMRectList
-Element[JC] def getElementsByClassName(classNames: String): HTMLCollection
-Element[JC] def getElementsByTagName(name: String): HTMLCollection
-Element[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+Element[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+Element[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+Element[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 Element[JC] def hasAttribute(name: String): Boolean
 Element[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 Element[JC] def hasAttributes(): Boolean
@@ -1821,7 +1821,7 @@ HTMLAnchorElement[JC] def blur(): Unit
 HTMLAnchorElement[JC] var charset: String
 HTMLAnchorElement[JC] def childElementCount: Int
 HTMLAnchorElement[JC] def childNodes: NodeList[Node]
-HTMLAnchorElement[JC] def children: HTMLCollection
+HTMLAnchorElement[JC] def children: HTMLCollection[Element]
 HTMLAnchorElement[JC] var classList: DOMTokenList
 HTMLAnchorElement[JC] var className: String
 HTMLAnchorElement[JC] def click(): Unit
@@ -1848,9 +1848,9 @@ HTMLAnchorElement[JC] def getAttributeNode(name: String): Attr
 HTMLAnchorElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLAnchorElement[JC] def getBoundingClientRect(): DOMRect
 HTMLAnchorElement[JC] def getClientRects(): DOMRectList
-HTMLAnchorElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLAnchorElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLAnchorElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLAnchorElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLAnchorElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLAnchorElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLAnchorElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLAnchorElement[JC] def hasAttribute(name: String): Boolean
 HTMLAnchorElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2033,7 +2033,7 @@ HTMLAreaElement[JC] def before(nodes: Node | String*): Unit
 HTMLAreaElement[JC] def blur(): Unit
 HTMLAreaElement[JC] def childElementCount: Int
 HTMLAreaElement[JC] def childNodes: NodeList[Node]
-HTMLAreaElement[JC] def children: HTMLCollection
+HTMLAreaElement[JC] def children: HTMLCollection[Element]
 HTMLAreaElement[JC] var classList: DOMTokenList
 HTMLAreaElement[JC] var className: String
 HTMLAreaElement[JC] def click(): Unit
@@ -2061,9 +2061,9 @@ HTMLAreaElement[JC] def getAttributeNode(name: String): Attr
 HTMLAreaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLAreaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLAreaElement[JC] def getClientRects(): DOMRectList
-HTMLAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLAreaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLAreaElement[JC] def hasAttribute(name: String): Boolean
 HTMLAreaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2245,7 +2245,7 @@ HTMLAudioElement[JC] def buffered: TimeRanges
 HTMLAudioElement[JC] def canPlayType(`type`: String): String
 HTMLAudioElement[JC] def childElementCount: Int
 HTMLAudioElement[JC] def childNodes: NodeList[Node]
-HTMLAudioElement[JC] def children: HTMLCollection
+HTMLAudioElement[JC] def children: HTMLCollection[Element]
 HTMLAudioElement[JC] var classList: DOMTokenList
 HTMLAudioElement[JC] var className: String
 HTMLAudioElement[JC] def click(): Unit
@@ -2279,9 +2279,9 @@ HTMLAudioElement[JC] def getAttributeNode(name: String): Attr
 HTMLAudioElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLAudioElement[JC] def getBoundingClientRect(): DOMRect
 HTMLAudioElement[JC] def getClientRects(): DOMRectList
-HTMLAudioElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLAudioElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLAudioElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLAudioElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLAudioElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLAudioElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLAudioElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLAudioElement[JC] def hasAttribute(name: String): Boolean
 HTMLAudioElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2466,7 +2466,7 @@ HTMLBRElement[JC] def before(nodes: Node | String*): Unit
 HTMLBRElement[JC] def blur(): Unit
 HTMLBRElement[JC] def childElementCount: Int
 HTMLBRElement[JC] def childNodes: NodeList[Node]
-HTMLBRElement[JC] def children: HTMLCollection
+HTMLBRElement[JC] def children: HTMLCollection[Element]
 HTMLBRElement[JC] var classList: DOMTokenList
 HTMLBRElement[JC] var className: String
 HTMLBRElement[JC] def click(): Unit
@@ -2493,9 +2493,9 @@ HTMLBRElement[JC] def getAttributeNode(name: String): Attr
 HTMLBRElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLBRElement[JC] def getBoundingClientRect(): DOMRect
 HTMLBRElement[JC] def getClientRects(): DOMRectList
-HTMLBRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLBRElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLBRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLBRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLBRElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLBRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLBRElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLBRElement[JC] def hasAttribute(name: String): Boolean
 HTMLBRElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2663,7 +2663,7 @@ HTMLBaseElement[JC] def before(nodes: Node | String*): Unit
 HTMLBaseElement[JC] def blur(): Unit
 HTMLBaseElement[JC] def childElementCount: Int
 HTMLBaseElement[JC] def childNodes: NodeList[Node]
-HTMLBaseElement[JC] def children: HTMLCollection
+HTMLBaseElement[JC] def children: HTMLCollection[Element]
 HTMLBaseElement[JC] var classList: DOMTokenList
 HTMLBaseElement[JC] var className: String
 HTMLBaseElement[JC] def click(): Unit
@@ -2690,9 +2690,9 @@ HTMLBaseElement[JC] def getAttributeNode(name: String): Attr
 HTMLBaseElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLBaseElement[JC] def getBoundingClientRect(): DOMRect
 HTMLBaseElement[JC] def getClientRects(): DOMRectList
-HTMLBaseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLBaseElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLBaseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLBaseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLBaseElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLBaseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLBaseElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLBaseElement[JC] def hasAttribute(name: String): Boolean
 HTMLBaseElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -2862,7 +2862,7 @@ HTMLBodyElement[JC] def before(nodes: Node | String*): Unit
 HTMLBodyElement[JC] def blur(): Unit
 HTMLBodyElement[JC] def childElementCount: Int
 HTMLBodyElement[JC] def childNodes: NodeList[Node]
-HTMLBodyElement[JC] def children: HTMLCollection
+HTMLBodyElement[JC] def children: HTMLCollection[Element]
 HTMLBodyElement[JC] var classList: DOMTokenList
 HTMLBodyElement[JC] var className: String
 HTMLBodyElement[JC] def click(): Unit
@@ -2889,9 +2889,9 @@ HTMLBodyElement[JC] def getAttributeNode(name: String): Attr
 HTMLBodyElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLBodyElement[JC] def getBoundingClientRect(): DOMRect
 HTMLBodyElement[JC] def getClientRects(): DOMRectList
-HTMLBodyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLBodyElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLBodyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLBodyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLBodyElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLBodyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLBodyElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLBodyElement[JC] def hasAttribute(name: String): Boolean
 HTMLBodyElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3075,7 +3075,7 @@ HTMLButtonElement[JC] def blur(): Unit
 HTMLButtonElement[JC] def checkValidity(): Boolean
 HTMLButtonElement[JC] def childElementCount: Int
 HTMLButtonElement[JC] def childNodes: NodeList[Node]
-HTMLButtonElement[JC] def children: HTMLCollection
+HTMLButtonElement[JC] def children: HTMLCollection[Element]
 HTMLButtonElement[JC] var classList: DOMTokenList
 HTMLButtonElement[JC] var className: String
 HTMLButtonElement[JC] def click(): Unit
@@ -3109,9 +3109,9 @@ HTMLButtonElement[JC] def getAttributeNode(name: String): Attr
 HTMLButtonElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLButtonElement[JC] def getBoundingClientRect(): DOMRect
 HTMLButtonElement[JC] def getClientRects(): DOMRectList
-HTMLButtonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLButtonElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLButtonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLButtonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLButtonElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLButtonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLButtonElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLButtonElement[JC] def hasAttribute(name: String): Boolean
 HTMLButtonElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3287,7 +3287,7 @@ HTMLCanvasElement[JC] def before(nodes: Node | String*): Unit
 HTMLCanvasElement[JC] def blur(): Unit
 HTMLCanvasElement[JC] def childElementCount: Int
 HTMLCanvasElement[JC] def childNodes: NodeList[Node]
-HTMLCanvasElement[JC] def children: HTMLCollection
+HTMLCanvasElement[JC] def children: HTMLCollection[Element]
 HTMLCanvasElement[JC] var classList: DOMTokenList
 HTMLCanvasElement[JC] var className: String
 HTMLCanvasElement[JC] def click(): Unit
@@ -3315,9 +3315,9 @@ HTMLCanvasElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: St
 HTMLCanvasElement[JC] def getBoundingClientRect(): DOMRect
 HTMLCanvasElement[JC] def getClientRects(): DOMRectList
 HTMLCanvasElement[JC] def getContext(contextId: String, args: js.Any*): js.Dynamic
-HTMLCanvasElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLCanvasElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLCanvasElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLCanvasElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLCanvasElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLCanvasElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLCanvasElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLCanvasElement[JC] def hasAttribute(name: String): Boolean
 HTMLCanvasElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3477,9 +3477,9 @@ HTMLCanvasElement[JC] var title: String
 HTMLCanvasElement[JC] def toDataURL(`type`: String, args: js.Any*): String
 HTMLCanvasElement[JC] var width: Int
 HTMLCollection[JC] @JSBracketAccess def apply(index: Int): T
-HTMLCollection[JC] def item(index: Int): Element
+HTMLCollection[JC] def item(index: Int): E
 HTMLCollection[JC] def length: Int
-HTMLCollection[JC] def namedItem(name: String): Element
+HTMLCollection[JC] def namedItem(name: String): E
 HTMLDListElement[JC] var accessKey: String
 HTMLDListElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLDListElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
@@ -3492,7 +3492,7 @@ HTMLDListElement[JC] def before(nodes: Node | String*): Unit
 HTMLDListElement[JC] def blur(): Unit
 HTMLDListElement[JC] def childElementCount: Int
 HTMLDListElement[JC] def childNodes: NodeList[Node]
-HTMLDListElement[JC] def children: HTMLCollection
+HTMLDListElement[JC] def children: HTMLCollection[Element]
 HTMLDListElement[JC] var classList: DOMTokenList
 HTMLDListElement[JC] var className: String
 HTMLDListElement[JC] def click(): Unit
@@ -3519,9 +3519,9 @@ HTMLDListElement[JC] def getAttributeNode(name: String): Attr
 HTMLDListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLDListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLDListElement[JC] def getClientRects(): DOMRectList
-HTMLDListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLDListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLDListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDListElement[JC] def hasAttribute(name: String): Boolean
 HTMLDListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3689,7 +3689,7 @@ HTMLDataListElement[JC] def before(nodes: Node | String*): Unit
 HTMLDataListElement[JC] def blur(): Unit
 HTMLDataListElement[JC] def childElementCount: Int
 HTMLDataListElement[JC] def childNodes: NodeList[Node]
-HTMLDataListElement[JC] def children: HTMLCollection
+HTMLDataListElement[JC] def children: HTMLCollection[Element]
 HTMLDataListElement[JC] var classList: DOMTokenList
 HTMLDataListElement[JC] var className: String
 HTMLDataListElement[JC] def click(): Unit
@@ -3716,9 +3716,9 @@ HTMLDataListElement[JC] def getAttributeNode(name: String): Attr
 HTMLDataListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLDataListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLDataListElement[JC] def getClientRects(): DOMRectList
-HTMLDataListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLDataListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDataListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDataListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLDataListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDataListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDataListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDataListElement[JC] def hasAttribute(name: String): Boolean
 HTMLDataListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -3833,7 +3833,7 @@ HTMLDataListElement[JC] var ontimeupdate: js.Function1[Event, _]
 HTMLDataListElement[JC] var onvolumechange: js.Function1[Event, _]
 HTMLDataListElement[JC] var onwaiting: js.Function1[Event, _]
 HTMLDataListElement[JC] var onwheel: js.Function1[WheelEvent, _]
-HTMLDataListElement[JC] def options: HTMLCollection
+HTMLDataListElement[JC] def options: HTMLCollection[Element]
 HTMLDataListElement[JC] var outerHTML: String
 HTMLDataListElement[JC] def ownerDocument: Document
 HTMLDataListElement[JC] override def ownerDocument: HTMLDocument
@@ -3887,7 +3887,7 @@ HTMLDivElement[JC] def before(nodes: Node | String*): Unit
 HTMLDivElement[JC] def blur(): Unit
 HTMLDivElement[JC] def childElementCount: Int
 HTMLDivElement[JC] def childNodes: NodeList[Node]
-HTMLDivElement[JC] def children: HTMLCollection
+HTMLDivElement[JC] def children: HTMLCollection[Element]
 HTMLDivElement[JC] var classList: DOMTokenList
 HTMLDivElement[JC] var className: String
 HTMLDivElement[JC] def click(): Unit
@@ -3914,9 +3914,9 @@ HTMLDivElement[JC] def getAttributeNode(name: String): Attr
 HTMLDivElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLDivElement[JC] def getBoundingClientRect(): DOMRect
 HTMLDivElement[JC] def getClientRects(): DOMRectList
-HTMLDivElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLDivElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDivElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDivElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLDivElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDivElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDivElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDivElement[JC] def hasAttribute(name: String): Boolean
 HTMLDivElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -4077,7 +4077,7 @@ HTMLDocument[JC] def activeElement: Element
 HTMLDocument[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLDocument[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
 HTMLDocument[JC] def adoptNode(source: Node): Node
-HTMLDocument[JC] def anchors: HTMLCollection
+HTMLDocument[JC] def anchors: HTMLCollection[Element]
 HTMLDocument[JC] def appendChild(newChild: Node): Node
 HTMLDocument[JC] def attributes: NamedNodeMap
 HTMLDocument[JC] def baseURI: String
@@ -4085,7 +4085,7 @@ HTMLDocument[JC] var body: HTMLElement
 HTMLDocument[JC] def characterSet: String
 HTMLDocument[JC] def childElementCount: Int
 HTMLDocument[JC] def childNodes: NodeList[Node]
-HTMLDocument[JC] def children: HTMLCollection
+HTMLDocument[JC] def children: HTMLCollection[Element]
 HTMLDocument[JC] def cloneNode(deep: Boolean?): Node
 HTMLDocument[JC] def close(): Unit
 HTMLDocument[JC] def compareDocumentPosition(other: Node): Int
@@ -4116,7 +4116,7 @@ HTMLDocument[JC] def documentElement: Element
 HTMLDocument[JC] def documentURI: String
 HTMLDocument[JC] var domain: String
 HTMLDocument[JC] def elementFromPoint(x: Double, y: Double): Element
-HTMLDocument[JC] def embeds: HTMLCollection
+HTMLDocument[JC] def embeds: HTMLCollection[Element]
 HTMLDocument[JC] def evaluate(xpathExpression: String, contextNode: Node, namespaceResolver: XPathNSResolver, resultType: Int, result: XPathResult): XPathResult
 HTMLDocument[JC] def evaluate(xpathExpression: String, contextNode: Node, namespaceResolver: js.Function1[String, String], resultType: Int, result: XPathResult): XPathResult
 HTMLDocument[JC] def execCommand(commandId: String, showUI: Boolean?, value: js.Any?): Boolean
@@ -4127,14 +4127,14 @@ HTMLDocument[JC] def fireEvent(eventName: String, eventObj: js.Any?): Boolean
 HTMLDocument[JC] def firstChild: Node
 HTMLDocument[JC] def firstElementChild: Element
 HTMLDocument[JC] def focus(): Unit
-HTMLDocument[JC] def forms: HTMLCollection
+HTMLDocument[JC] def forms: HTMLCollection[Element]
 HTMLDocument[JC] def fullscreenElement: Element
 HTMLDocument[JC] def fullscreenEnabled: Boolean
 HTMLDocument[JC] def getElementById(elementId: String): Element
-HTMLDocument[JC] def getElementsByClassName(classNames: String): HTMLCollection
+HTMLDocument[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
 HTMLDocument[JC] def getElementsByName(elementName: String): NodeList[Node]
-HTMLDocument[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLDocument[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLDocument[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLDocument[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLDocument[JC] def getSelection(): Selection
 HTMLDocument[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLDocument[JC] def hasAttributes(): Boolean
@@ -4142,7 +4142,7 @@ HTMLDocument[JC] def hasChildNodes(): Boolean
 HTMLDocument[JC] def hasFocus(): Boolean
 HTMLDocument[JC] def head: HTMLHeadElement
 HTMLDocument[JC] def hidden: Boolean
-HTMLDocument[JC] def images: HTMLCollection
+HTMLDocument[JC] def images: HTMLCollection[Element]
 HTMLDocument[JC] def implementation: DOMImplementation
 HTMLDocument[JC] def importNode(importedNode: Node, deep: Boolean): Node
 HTMLDocument[JC] var innerText: String
@@ -4155,7 +4155,7 @@ HTMLDocument[JC] def isSupported(feature: String, version: String): Boolean
 HTMLDocument[JC] def lastChild: Node
 HTMLDocument[JC] def lastElementChild: Element
 HTMLDocument[JC] def lastModified: String
-HTMLDocument[JC] def links: HTMLCollection
+HTMLDocument[JC] def links: HTMLCollection[Element]
 HTMLDocument[JC] def localName: String
 HTMLDocument[JC] var location: Location
 HTMLDocument[JC] def lookupNamespaceURI(prefix: String): String
@@ -4245,7 +4245,7 @@ HTMLDocument[JC] var onwheel: js.Function1[WheelEvent, _]
 HTMLDocument[JC] def open(url: String?, name: String?, features: String?, replace: Boolean?): js.Dynamic
 HTMLDocument[JC] def ownerDocument: Document
 HTMLDocument[JC] def parentNode: Node
-HTMLDocument[JC] def plugins: HTMLCollection
+HTMLDocument[JC] def plugins: HTMLCollection[Element]
 HTMLDocument[JC] def pointerLockElement: Element
 HTMLDocument[JC] def previousSibling: Node
 HTMLDocument[JC] def queryCommandEnabled(commandId: String): Boolean
@@ -4284,7 +4284,7 @@ HTMLElement[JC] def before(nodes: Node | String*): Unit
 HTMLElement[JC] def blur(): Unit
 HTMLElement[JC] def childElementCount: Int
 HTMLElement[JC] def childNodes: NodeList[Node]
-HTMLElement[JC] def children: HTMLCollection
+HTMLElement[JC] def children: HTMLCollection[Element]
 HTMLElement[JC] var classList: DOMTokenList
 HTMLElement[JC] var className: String
 HTMLElement[JC] def click(): Unit
@@ -4311,9 +4311,9 @@ HTMLElement[JC] def getAttributeNode(name: String): Attr
 HTMLElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLElement[JC] def getBoundingClientRect(): DOMRect
 HTMLElement[JC] def getClientRects(): DOMRectList
-HTMLElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLElement[JC] def hasAttribute(name: String): Boolean
 HTMLElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -4481,7 +4481,7 @@ HTMLEmbedElement[JC] def before(nodes: Node | String*): Unit
 HTMLEmbedElement[JC] def blur(): Unit
 HTMLEmbedElement[JC] def childElementCount: Int
 HTMLEmbedElement[JC] def childNodes: NodeList[Node]
-HTMLEmbedElement[JC] def children: HTMLCollection
+HTMLEmbedElement[JC] def children: HTMLCollection[Element]
 HTMLEmbedElement[JC] var classList: DOMTokenList
 HTMLEmbedElement[JC] var className: String
 HTMLEmbedElement[JC] def click(): Unit
@@ -4508,9 +4508,9 @@ HTMLEmbedElement[JC] def getAttributeNode(name: String): Attr
 HTMLEmbedElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLEmbedElement[JC] def getBoundingClientRect(): DOMRect
 HTMLEmbedElement[JC] def getClientRects(): DOMRectList
-HTMLEmbedElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLEmbedElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLEmbedElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLEmbedElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLEmbedElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLEmbedElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLEmbedElement[JC] def getSVGDocument(): Document
 HTMLEmbedElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLEmbedElement[JC] def hasAttribute(name: String): Boolean
@@ -4683,7 +4683,7 @@ HTMLFieldSetElement[JC] def blur(): Unit
 HTMLFieldSetElement[JC] def checkValidity(): Boolean
 HTMLFieldSetElement[JC] def childElementCount: Int
 HTMLFieldSetElement[JC] def childNodes: NodeList[Node]
-HTMLFieldSetElement[JC] def children: HTMLCollection
+HTMLFieldSetElement[JC] def children: HTMLCollection[Element]
 HTMLFieldSetElement[JC] var classList: DOMTokenList
 HTMLFieldSetElement[JC] var className: String
 HTMLFieldSetElement[JC] def click(): Unit
@@ -4712,9 +4712,9 @@ HTMLFieldSetElement[JC] def getAttributeNode(name: String): Attr
 HTMLFieldSetElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLFieldSetElement[JC] def getBoundingClientRect(): DOMRect
 HTMLFieldSetElement[JC] def getClientRects(): DOMRectList
-HTMLFieldSetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLFieldSetElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLFieldSetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLFieldSetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLFieldSetElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLFieldSetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLFieldSetElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLFieldSetElement[JC] def hasAttribute(name: String): Boolean
 HTMLFieldSetElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -4891,7 +4891,7 @@ HTMLFormElement[JC] def blur(): Unit
 HTMLFormElement[JC] def checkValidity(): Boolean
 HTMLFormElement[JC] def childElementCount: Int
 HTMLFormElement[JC] def childNodes: NodeList[Node]
-HTMLFormElement[JC] def children: HTMLCollection
+HTMLFormElement[JC] def children: HTMLCollection[Element]
 HTMLFormElement[JC] var classList: DOMTokenList
 HTMLFormElement[JC] var className: String
 HTMLFormElement[JC] def click(): Unit
@@ -4908,7 +4908,7 @@ HTMLFormElement[JC] def dataset: js.Dictionary[String]
 HTMLFormElement[JC] var dir: String
 HTMLFormElement[JC] def dispatchEvent(evt: Event): Boolean
 HTMLFormElement[JC] var draggable: Boolean
-HTMLFormElement[JC] def elements: HTMLCollection
+HTMLFormElement[JC] def elements: HTMLCollection[Element]
 HTMLFormElement[JC] var encoding: String
 HTMLFormElement[JC] var enctype: String
 HTMLFormElement[JC] var filters: Object
@@ -4921,9 +4921,9 @@ HTMLFormElement[JC] def getAttributeNode(name: String): Attr
 HTMLFormElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLFormElement[JC] def getBoundingClientRect(): DOMRect
 HTMLFormElement[JC] def getClientRects(): DOMRectList
-HTMLFormElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLFormElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLFormElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLFormElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLFormElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLFormElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLFormElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLFormElement[JC] def hasAttribute(name: String): Boolean
 HTMLFormElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5101,7 +5101,7 @@ HTMLHRElement[JC] def before(nodes: Node | String*): Unit
 HTMLHRElement[JC] def blur(): Unit
 HTMLHRElement[JC] def childElementCount: Int
 HTMLHRElement[JC] def childNodes: NodeList[Node]
-HTMLHRElement[JC] def children: HTMLCollection
+HTMLHRElement[JC] def children: HTMLCollection[Element]
 HTMLHRElement[JC] var classList: DOMTokenList
 HTMLHRElement[JC] var className: String
 HTMLHRElement[JC] def click(): Unit
@@ -5128,9 +5128,9 @@ HTMLHRElement[JC] def getAttributeNode(name: String): Attr
 HTMLHRElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHRElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHRElement[JC] def getClientRects(): DOMRectList
-HTMLHRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHRElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHRElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHRElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHRElement[JC] def hasAttribute(name: String): Boolean
 HTMLHRElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5298,7 +5298,7 @@ HTMLHeadElement[JC] def before(nodes: Node | String*): Unit
 HTMLHeadElement[JC] def blur(): Unit
 HTMLHeadElement[JC] def childElementCount: Int
 HTMLHeadElement[JC] def childNodes: NodeList[Node]
-HTMLHeadElement[JC] def children: HTMLCollection
+HTMLHeadElement[JC] def children: HTMLCollection[Element]
 HTMLHeadElement[JC] var classList: DOMTokenList
 HTMLHeadElement[JC] var className: String
 HTMLHeadElement[JC] def click(): Unit
@@ -5325,9 +5325,9 @@ HTMLHeadElement[JC] def getAttributeNode(name: String): Attr
 HTMLHeadElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHeadElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHeadElement[JC] def getClientRects(): DOMRectList
-HTMLHeadElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHeadElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHeadElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHeadElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHeadElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHeadElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHeadElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHeadElement[JC] def hasAttribute(name: String): Boolean
 HTMLHeadElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5495,7 +5495,7 @@ HTMLHeadingElement[JC] def before(nodes: Node | String*): Unit
 HTMLHeadingElement[JC] def blur(): Unit
 HTMLHeadingElement[JC] def childElementCount: Int
 HTMLHeadingElement[JC] def childNodes: NodeList[Node]
-HTMLHeadingElement[JC] def children: HTMLCollection
+HTMLHeadingElement[JC] def children: HTMLCollection[Element]
 HTMLHeadingElement[JC] var classList: DOMTokenList
 HTMLHeadingElement[JC] var className: String
 HTMLHeadingElement[JC] def click(): Unit
@@ -5522,9 +5522,9 @@ HTMLHeadingElement[JC] def getAttributeNode(name: String): Attr
 HTMLHeadingElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHeadingElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHeadingElement[JC] def getClientRects(): DOMRectList
-HTMLHeadingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHeadingElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHeadingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHeadingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHeadingElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHeadingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHeadingElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHeadingElement[JC] def hasAttribute(name: String): Boolean
 HTMLHeadingElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5692,7 +5692,7 @@ HTMLHtmlElement[JC] def before(nodes: Node | String*): Unit
 HTMLHtmlElement[JC] def blur(): Unit
 HTMLHtmlElement[JC] def childElementCount: Int
 HTMLHtmlElement[JC] def childNodes: NodeList[Node]
-HTMLHtmlElement[JC] def children: HTMLCollection
+HTMLHtmlElement[JC] def children: HTMLCollection[Element]
 HTMLHtmlElement[JC] var classList: DOMTokenList
 HTMLHtmlElement[JC] var className: String
 HTMLHtmlElement[JC] def click(): Unit
@@ -5719,9 +5719,9 @@ HTMLHtmlElement[JC] def getAttributeNode(name: String): Attr
 HTMLHtmlElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLHtmlElement[JC] def getBoundingClientRect(): DOMRect
 HTMLHtmlElement[JC] def getClientRects(): DOMRectList
-HTMLHtmlElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLHtmlElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLHtmlElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLHtmlElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLHtmlElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLHtmlElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLHtmlElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLHtmlElement[JC] def hasAttribute(name: String): Boolean
 HTMLHtmlElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -5890,7 +5890,7 @@ HTMLIFrameElement[JC] def blur(): Unit
 HTMLIFrameElement[JC] var border: String
 HTMLIFrameElement[JC] def childElementCount: Int
 HTMLIFrameElement[JC] def childNodes: NodeList[Node]
-HTMLIFrameElement[JC] def children: HTMLCollection
+HTMLIFrameElement[JC] def children: HTMLCollection[Element]
 HTMLIFrameElement[JC] var classList: DOMTokenList
 HTMLIFrameElement[JC] var className: String
 HTMLIFrameElement[JC] def click(): Unit
@@ -5919,9 +5919,9 @@ HTMLIFrameElement[JC] def getAttributeNode(name: String): Attr
 HTMLIFrameElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLIFrameElement[JC] def getBoundingClientRect(): DOMRect
 HTMLIFrameElement[JC] def getClientRects(): DOMRectList
-HTMLIFrameElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLIFrameElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLIFrameElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLIFrameElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLIFrameElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLIFrameElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLIFrameElement[JC] def getSVGDocument(): Document
 HTMLIFrameElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLIFrameElement[JC] def hasAttribute(name: String): Boolean
@@ -6098,7 +6098,7 @@ HTMLImageElement[JC] def before(nodes: Node | String*): Unit
 HTMLImageElement[JC] def blur(): Unit
 HTMLImageElement[JC] def childElementCount: Int
 HTMLImageElement[JC] def childNodes: NodeList[Node]
-HTMLImageElement[JC] def children: HTMLCollection
+HTMLImageElement[JC] def children: HTMLCollection[Element]
 HTMLImageElement[JC] var classList: DOMTokenList
 HTMLImageElement[JC] var className: String
 HTMLImageElement[JC] def click(): Unit
@@ -6126,9 +6126,9 @@ HTMLImageElement[JC] def getAttributeNode(name: String): Attr
 HTMLImageElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLImageElement[JC] def getBoundingClientRect(): DOMRect
 HTMLImageElement[JC] def getClientRects(): DOMRectList
-HTMLImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLImageElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLImageElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLImageElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLImageElement[JC] def hasAttribute(name: String): Boolean
 HTMLImageElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6311,7 +6311,7 @@ HTMLInputElement[JC] def checkValidity(): Boolean
 HTMLInputElement[JC] var checked: Boolean
 HTMLInputElement[JC] def childElementCount: Int
 HTMLInputElement[JC] def childNodes: NodeList[Node]
-HTMLInputElement[JC] def children: HTMLCollection
+HTMLInputElement[JC] def children: HTMLCollection[Element]
 HTMLInputElement[JC] var classList: DOMTokenList
 HTMLInputElement[JC] var className: String
 HTMLInputElement[JC] def click(): Unit
@@ -6348,9 +6348,9 @@ HTMLInputElement[JC] def getAttributeNode(name: String): Attr
 HTMLInputElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLInputElement[JC] def getBoundingClientRect(): DOMRect
 HTMLInputElement[JC] def getClientRects(): DOMRectList
-HTMLInputElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLInputElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLInputElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLInputElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLInputElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLInputElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLInputElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLInputElement[JC] def hasAttribute(name: String): Boolean
 HTMLInputElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6548,7 +6548,7 @@ HTMLLIElement[JC] def before(nodes: Node | String*): Unit
 HTMLLIElement[JC] def blur(): Unit
 HTMLLIElement[JC] def childElementCount: Int
 HTMLLIElement[JC] def childNodes: NodeList[Node]
-HTMLLIElement[JC] def children: HTMLCollection
+HTMLLIElement[JC] def children: HTMLCollection[Element]
 HTMLLIElement[JC] var classList: DOMTokenList
 HTMLLIElement[JC] var className: String
 HTMLLIElement[JC] def click(): Unit
@@ -6575,9 +6575,9 @@ HTMLLIElement[JC] def getAttributeNode(name: String): Attr
 HTMLLIElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLIElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLIElement[JC] def getClientRects(): DOMRectList
-HTMLLIElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLIElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLIElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLIElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLIElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLIElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLIElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLIElement[JC] def hasAttribute(name: String): Boolean
 HTMLLIElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6746,7 +6746,7 @@ HTMLLabelElement[JC] def before(nodes: Node | String*): Unit
 HTMLLabelElement[JC] def blur(): Unit
 HTMLLabelElement[JC] def childElementCount: Int
 HTMLLabelElement[JC] def childNodes: NodeList[Node]
-HTMLLabelElement[JC] def children: HTMLCollection
+HTMLLabelElement[JC] def children: HTMLCollection[Element]
 HTMLLabelElement[JC] var classList: DOMTokenList
 HTMLLabelElement[JC] var className: String
 HTMLLabelElement[JC] def click(): Unit
@@ -6774,9 +6774,9 @@ HTMLLabelElement[JC] def getAttributeNode(name: String): Attr
 HTMLLabelElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLabelElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLabelElement[JC] def getClientRects(): DOMRectList
-HTMLLabelElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLabelElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLabelElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLabelElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLabelElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLabelElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLabelElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLabelElement[JC] def hasAttribute(name: String): Boolean
 HTMLLabelElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -6946,7 +6946,7 @@ HTMLLegendElement[JC] def before(nodes: Node | String*): Unit
 HTMLLegendElement[JC] def blur(): Unit
 HTMLLegendElement[JC] def childElementCount: Int
 HTMLLegendElement[JC] def childNodes: NodeList[Node]
-HTMLLegendElement[JC] def children: HTMLCollection
+HTMLLegendElement[JC] def children: HTMLCollection[Element]
 HTMLLegendElement[JC] var classList: DOMTokenList
 HTMLLegendElement[JC] var className: String
 HTMLLegendElement[JC] def click(): Unit
@@ -6974,9 +6974,9 @@ HTMLLegendElement[JC] def getAttributeNode(name: String): Attr
 HTMLLegendElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLegendElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLegendElement[JC] def getClientRects(): DOMRectList
-HTMLLegendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLegendElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLegendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLegendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLegendElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLegendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLegendElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLegendElement[JC] def hasAttribute(name: String): Boolean
 HTMLLegendElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7144,7 +7144,7 @@ HTMLLinkElement[JC] def before(nodes: Node | String*): Unit
 HTMLLinkElement[JC] def blur(): Unit
 HTMLLinkElement[JC] def childElementCount: Int
 HTMLLinkElement[JC] def childNodes: NodeList[Node]
-HTMLLinkElement[JC] def children: HTMLCollection
+HTMLLinkElement[JC] def children: HTMLCollection[Element]
 HTMLLinkElement[JC] var classList: DOMTokenList
 HTMLLinkElement[JC] var className: String
 HTMLLinkElement[JC] def click(): Unit
@@ -7171,9 +7171,9 @@ HTMLLinkElement[JC] def getAttributeNode(name: String): Attr
 HTMLLinkElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLLinkElement[JC] def getBoundingClientRect(): DOMRect
 HTMLLinkElement[JC] def getClientRects(): DOMRectList
-HTMLLinkElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLLinkElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLLinkElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLLinkElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLLinkElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLLinkElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLLinkElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLLinkElement[JC] def hasAttribute(name: String): Boolean
 HTMLLinkElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7349,7 +7349,7 @@ HTMLMapElement[JC] def before(nodes: Node | String*): Unit
 HTMLMapElement[JC] def blur(): Unit
 HTMLMapElement[JC] def childElementCount: Int
 HTMLMapElement[JC] def childNodes: NodeList[Node]
-HTMLMapElement[JC] def children: HTMLCollection
+HTMLMapElement[JC] def children: HTMLCollection[Element]
 HTMLMapElement[JC] var classList: DOMTokenList
 HTMLMapElement[JC] var className: String
 HTMLMapElement[JC] def click(): Unit
@@ -7376,9 +7376,9 @@ HTMLMapElement[JC] def getAttributeNode(name: String): Attr
 HTMLMapElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMapElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMapElement[JC] def getClientRects(): DOMRectList
-HTMLMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMapElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMapElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMapElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMapElement[JC] def hasAttribute(name: String): Boolean
 HTMLMapElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7551,7 +7551,7 @@ HTMLMediaElement[JC] def buffered: TimeRanges
 HTMLMediaElement[JC] def canPlayType(`type`: String): String
 HTMLMediaElement[JC] def childElementCount: Int
 HTMLMediaElement[JC] def childNodes: NodeList[Node]
-HTMLMediaElement[JC] def children: HTMLCollection
+HTMLMediaElement[JC] def children: HTMLCollection[Element]
 HTMLMediaElement[JC] var classList: DOMTokenList
 HTMLMediaElement[JC] var className: String
 HTMLMediaElement[JC] def click(): Unit
@@ -7585,9 +7585,9 @@ HTMLMediaElement[JC] def getAttributeNode(name: String): Attr
 HTMLMediaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMediaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMediaElement[JC] def getClientRects(): DOMRectList
-HTMLMediaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMediaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMediaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMediaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMediaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMediaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMediaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMediaElement[JC] def hasAttribute(name: String): Boolean
 HTMLMediaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7781,7 +7781,7 @@ HTMLMenuElement[JC] def before(nodes: Node | String*): Unit
 HTMLMenuElement[JC] def blur(): Unit
 HTMLMenuElement[JC] def childElementCount: Int
 HTMLMenuElement[JC] def childNodes: NodeList[Node]
-HTMLMenuElement[JC] def children: HTMLCollection
+HTMLMenuElement[JC] def children: HTMLCollection[Element]
 HTMLMenuElement[JC] var classList: DOMTokenList
 HTMLMenuElement[JC] var className: String
 HTMLMenuElement[JC] def click(): Unit
@@ -7808,9 +7808,9 @@ HTMLMenuElement[JC] def getAttributeNode(name: String): Attr
 HTMLMenuElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMenuElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMenuElement[JC] def getClientRects(): DOMRectList
-HTMLMenuElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMenuElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMenuElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMenuElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMenuElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMenuElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMenuElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMenuElement[JC] def hasAttribute(name: String): Boolean
 HTMLMenuElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -7980,7 +7980,7 @@ HTMLMetaElement[JC] def blur(): Unit
 HTMLMetaElement[JC] var charset: String
 HTMLMetaElement[JC] def childElementCount: Int
 HTMLMetaElement[JC] def childNodes: NodeList[Node]
-HTMLMetaElement[JC] def children: HTMLCollection
+HTMLMetaElement[JC] def children: HTMLCollection[Element]
 HTMLMetaElement[JC] var classList: DOMTokenList
 HTMLMetaElement[JC] var className: String
 HTMLMetaElement[JC] def click(): Unit
@@ -8008,9 +8008,9 @@ HTMLMetaElement[JC] def getAttributeNode(name: String): Attr
 HTMLMetaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLMetaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLMetaElement[JC] def getClientRects(): DOMRectList
-HTMLMetaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLMetaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLMetaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLMetaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLMetaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLMetaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLMetaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLMetaElement[JC] def hasAttribute(name: String): Boolean
 HTMLMetaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8181,7 +8181,7 @@ HTMLModElement[JC] def before(nodes: Node | String*): Unit
 HTMLModElement[JC] def blur(): Unit
 HTMLModElement[JC] def childElementCount: Int
 HTMLModElement[JC] def childNodes: NodeList[Node]
-HTMLModElement[JC] def children: HTMLCollection
+HTMLModElement[JC] def children: HTMLCollection[Element]
 HTMLModElement[JC] var cite: String
 HTMLModElement[JC] var classList: DOMTokenList
 HTMLModElement[JC] var className: String
@@ -8210,9 +8210,9 @@ HTMLModElement[JC] def getAttributeNode(name: String): Attr
 HTMLModElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLModElement[JC] def getBoundingClientRect(): DOMRect
 HTMLModElement[JC] def getClientRects(): DOMRectList
-HTMLModElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLModElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLModElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLModElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLModElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLModElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLModElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLModElement[JC] def hasAttribute(name: String): Boolean
 HTMLModElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8380,7 +8380,7 @@ HTMLOListElement[JC] def before(nodes: Node | String*): Unit
 HTMLOListElement[JC] def blur(): Unit
 HTMLOListElement[JC] def childElementCount: Int
 HTMLOListElement[JC] def childNodes: NodeList[Node]
-HTMLOListElement[JC] def children: HTMLCollection
+HTMLOListElement[JC] def children: HTMLCollection[Element]
 HTMLOListElement[JC] var classList: DOMTokenList
 HTMLOListElement[JC] var className: String
 HTMLOListElement[JC] def click(): Unit
@@ -8407,9 +8407,9 @@ HTMLOListElement[JC] def getAttributeNode(name: String): Attr
 HTMLOListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLOListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLOListElement[JC] def getClientRects(): DOMRectList
-HTMLOListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLOListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLOListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLOListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLOListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLOListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLOListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLOListElement[JC] def hasAttribute(name: String): Boolean
 HTMLOListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8582,7 +8582,7 @@ HTMLObjectElement[JC] def blur(): Unit
 HTMLObjectElement[JC] def checkValidity(): Boolean
 HTMLObjectElement[JC] def childElementCount: Int
 HTMLObjectElement[JC] def childNodes: NodeList[Node]
-HTMLObjectElement[JC] def children: HTMLCollection
+HTMLObjectElement[JC] def children: HTMLCollection[Element]
 HTMLObjectElement[JC] var classList: DOMTokenList
 HTMLObjectElement[JC] var className: String
 HTMLObjectElement[JC] var classid: String
@@ -8613,9 +8613,9 @@ HTMLObjectElement[JC] def getAttributeNode(name: String): Attr
 HTMLObjectElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLObjectElement[JC] def getBoundingClientRect(): DOMRect
 HTMLObjectElement[JC] def getClientRects(): DOMRectList
-HTMLObjectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLObjectElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLObjectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLObjectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLObjectElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLObjectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLObjectElement[JC] def getSVGDocument(): Document
 HTMLObjectElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLObjectElement[JC] def hasAttribute(name: String): Boolean
@@ -8794,7 +8794,7 @@ HTMLOptGroupElement[JC] def before(nodes: Node | String*): Unit
 HTMLOptGroupElement[JC] def blur(): Unit
 HTMLOptGroupElement[JC] def childElementCount: Int
 HTMLOptGroupElement[JC] def childNodes: NodeList[Node]
-HTMLOptGroupElement[JC] def children: HTMLCollection
+HTMLOptGroupElement[JC] def children: HTMLCollection[Element]
 HTMLOptGroupElement[JC] var classList: DOMTokenList
 HTMLOptGroupElement[JC] var className: String
 HTMLOptGroupElement[JC] def click(): Unit
@@ -8822,9 +8822,9 @@ HTMLOptGroupElement[JC] def getAttributeNode(name: String): Attr
 HTMLOptGroupElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLOptGroupElement[JC] def getBoundingClientRect(): DOMRect
 HTMLOptGroupElement[JC] def getClientRects(): DOMRectList
-HTMLOptGroupElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLOptGroupElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLOptGroupElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLOptGroupElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLOptGroupElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLOptGroupElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLOptGroupElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLOptGroupElement[JC] def hasAttribute(name: String): Boolean
 HTMLOptGroupElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -8993,7 +8993,7 @@ HTMLOptionElement[JC] def before(nodes: Node | String*): Unit
 HTMLOptionElement[JC] def blur(): Unit
 HTMLOptionElement[JC] def childElementCount: Int
 HTMLOptionElement[JC] def childNodes: NodeList[Node]
-HTMLOptionElement[JC] def children: HTMLCollection
+HTMLOptionElement[JC] def children: HTMLCollection[Element]
 HTMLOptionElement[JC] var classList: DOMTokenList
 HTMLOptionElement[JC] var className: String
 HTMLOptionElement[JC] def click(): Unit
@@ -9024,9 +9024,9 @@ HTMLOptionElement[JC] def getAttributeNode(name: String): Attr
 HTMLOptionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLOptionElement[JC] def getBoundingClientRect(): DOMRect
 HTMLOptionElement[JC] def getClientRects(): DOMRectList
-HTMLOptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLOptionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLOptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLOptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLOptionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLOptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLOptionElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLOptionElement[JC] def hasAttribute(name: String): Boolean
 HTMLOptionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9188,9 +9188,9 @@ HTMLOptionElement[JC] var textContent: String
 HTMLOptionElement[JC] var title: String
 HTMLOptionElement[JC] var value: String
 HTMLOptionsCollection[JC] @JSBracketAccess def apply(index: Int): T
-HTMLOptionsCollection[JC] def item(index: Int): HTMLOptionElement
+HTMLOptionsCollection[JC] def item(index: Int): E
 HTMLOptionsCollection[JC] def length: Int
-HTMLOptionsCollection[JC] def namedItem(name: String): HTMLOptionElement
+HTMLOptionsCollection[JC] def namedItem(name: String): E
 HTMLParagraphElement[JC] var accessKey: String
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 HTMLParagraphElement[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
@@ -9203,7 +9203,7 @@ HTMLParagraphElement[JC] def before(nodes: Node | String*): Unit
 HTMLParagraphElement[JC] def blur(): Unit
 HTMLParagraphElement[JC] def childElementCount: Int
 HTMLParagraphElement[JC] def childNodes: NodeList[Node]
-HTMLParagraphElement[JC] def children: HTMLCollection
+HTMLParagraphElement[JC] def children: HTMLCollection[Element]
 HTMLParagraphElement[JC] var classList: DOMTokenList
 HTMLParagraphElement[JC] var className: String
 HTMLParagraphElement[JC] def click(): Unit
@@ -9230,9 +9230,9 @@ HTMLParagraphElement[JC] def getAttributeNode(name: String): Attr
 HTMLParagraphElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLParagraphElement[JC] def getBoundingClientRect(): DOMRect
 HTMLParagraphElement[JC] def getClientRects(): DOMRectList
-HTMLParagraphElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLParagraphElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLParagraphElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLParagraphElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLParagraphElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLParagraphElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLParagraphElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLParagraphElement[JC] def hasAttribute(name: String): Boolean
 HTMLParagraphElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9400,7 +9400,7 @@ HTMLParamElement[JC] def before(nodes: Node | String*): Unit
 HTMLParamElement[JC] def blur(): Unit
 HTMLParamElement[JC] def childElementCount: Int
 HTMLParamElement[JC] def childNodes: NodeList[Node]
-HTMLParamElement[JC] def children: HTMLCollection
+HTMLParamElement[JC] def children: HTMLCollection[Element]
 HTMLParamElement[JC] var classList: DOMTokenList
 HTMLParamElement[JC] var className: String
 HTMLParamElement[JC] def click(): Unit
@@ -9427,9 +9427,9 @@ HTMLParamElement[JC] def getAttributeNode(name: String): Attr
 HTMLParamElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLParamElement[JC] def getBoundingClientRect(): DOMRect
 HTMLParamElement[JC] def getClientRects(): DOMRectList
-HTMLParamElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLParamElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLParamElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLParamElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLParamElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLParamElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLParamElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLParamElement[JC] def hasAttribute(name: String): Boolean
 HTMLParamElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9599,7 +9599,7 @@ HTMLPreElement[JC] def before(nodes: Node | String*): Unit
 HTMLPreElement[JC] def blur(): Unit
 HTMLPreElement[JC] def childElementCount: Int
 HTMLPreElement[JC] def childNodes: NodeList[Node]
-HTMLPreElement[JC] def children: HTMLCollection
+HTMLPreElement[JC] def children: HTMLCollection[Element]
 HTMLPreElement[JC] var classList: DOMTokenList
 HTMLPreElement[JC] var className: String
 HTMLPreElement[JC] def click(): Unit
@@ -9626,9 +9626,9 @@ HTMLPreElement[JC] def getAttributeNode(name: String): Attr
 HTMLPreElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLPreElement[JC] def getBoundingClientRect(): DOMRect
 HTMLPreElement[JC] def getClientRects(): DOMRectList
-HTMLPreElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLPreElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLPreElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLPreElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLPreElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLPreElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLPreElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLPreElement[JC] def hasAttribute(name: String): Boolean
 HTMLPreElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9796,7 +9796,7 @@ HTMLProgressElement[JC] def before(nodes: Node | String*): Unit
 HTMLProgressElement[JC] def blur(): Unit
 HTMLProgressElement[JC] def childElementCount: Int
 HTMLProgressElement[JC] def childNodes: NodeList[Node]
-HTMLProgressElement[JC] def children: HTMLCollection
+HTMLProgressElement[JC] def children: HTMLCollection[Element]
 HTMLProgressElement[JC] var classList: DOMTokenList
 HTMLProgressElement[JC] var className: String
 HTMLProgressElement[JC] def click(): Unit
@@ -9824,9 +9824,9 @@ HTMLProgressElement[JC] def getAttributeNode(name: String): Attr
 HTMLProgressElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLProgressElement[JC] def getBoundingClientRect(): DOMRect
 HTMLProgressElement[JC] def getClientRects(): DOMRectList
-HTMLProgressElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLProgressElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLProgressElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLProgressElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLProgressElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLProgressElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLProgressElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLProgressElement[JC] def hasAttribute(name: String): Boolean
 HTMLProgressElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -9997,7 +9997,7 @@ HTMLQuoteElement[JC] def before(nodes: Node | String*): Unit
 HTMLQuoteElement[JC] def blur(): Unit
 HTMLQuoteElement[JC] def childElementCount: Int
 HTMLQuoteElement[JC] def childNodes: NodeList[Node]
-HTMLQuoteElement[JC] def children: HTMLCollection
+HTMLQuoteElement[JC] def children: HTMLCollection[Element]
 HTMLQuoteElement[JC] var cite: String
 HTMLQuoteElement[JC] var classList: DOMTokenList
 HTMLQuoteElement[JC] var className: String
@@ -10026,9 +10026,9 @@ HTMLQuoteElement[JC] def getAttributeNode(name: String): Attr
 HTMLQuoteElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLQuoteElement[JC] def getBoundingClientRect(): DOMRect
 HTMLQuoteElement[JC] def getClientRects(): DOMRectList
-HTMLQuoteElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLQuoteElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLQuoteElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLQuoteElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLQuoteElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLQuoteElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLQuoteElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLQuoteElement[JC] def hasAttribute(name: String): Boolean
 HTMLQuoteElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10198,7 +10198,7 @@ HTMLScriptElement[JC] def blur(): Unit
 HTMLScriptElement[JC] var charset: String
 HTMLScriptElement[JC] def childElementCount: Int
 HTMLScriptElement[JC] def childNodes: NodeList[Node]
-HTMLScriptElement[JC] def children: HTMLCollection
+HTMLScriptElement[JC] def children: HTMLCollection[Element]
 HTMLScriptElement[JC] var classList: DOMTokenList
 HTMLScriptElement[JC] var className: String
 HTMLScriptElement[JC] def click(): Unit
@@ -10227,9 +10227,9 @@ HTMLScriptElement[JC] def getAttributeNode(name: String): Attr
 HTMLScriptElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLScriptElement[JC] def getBoundingClientRect(): DOMRect
 HTMLScriptElement[JC] def getClientRects(): DOMRectList
-HTMLScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLScriptElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLScriptElement[JC] def hasAttribute(name: String): Boolean
 HTMLScriptElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10405,7 +10405,7 @@ HTMLSelectElement[JC] def blur(): Unit
 HTMLSelectElement[JC] def checkValidity(): Boolean
 HTMLSelectElement[JC] def childElementCount: Int
 HTMLSelectElement[JC] def childNodes: NodeList[Node]
-HTMLSelectElement[JC] def children: HTMLCollection
+HTMLSelectElement[JC] def children: HTMLCollection[Element]
 HTMLSelectElement[JC] var classList: DOMTokenList
 HTMLSelectElement[JC] var className: String
 HTMLSelectElement[JC] def click(): Unit
@@ -10434,9 +10434,9 @@ HTMLSelectElement[JC] def getAttributeNode(name: String): Attr
 HTMLSelectElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLSelectElement[JC] def getBoundingClientRect(): DOMRect
 HTMLSelectElement[JC] def getClientRects(): DOMRectList
-HTMLSelectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLSelectElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLSelectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLSelectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLSelectElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLSelectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLSelectElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLSelectElement[JC] def hasAttribute(name: String): Boolean
 HTMLSelectElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10621,7 +10621,7 @@ HTMLSourceElement[JC] def before(nodes: Node | String*): Unit
 HTMLSourceElement[JC] def blur(): Unit
 HTMLSourceElement[JC] def childElementCount: Int
 HTMLSourceElement[JC] def childNodes: NodeList[Node]
-HTMLSourceElement[JC] def children: HTMLCollection
+HTMLSourceElement[JC] def children: HTMLCollection[Element]
 HTMLSourceElement[JC] var classList: DOMTokenList
 HTMLSourceElement[JC] var className: String
 HTMLSourceElement[JC] def click(): Unit
@@ -10648,9 +10648,9 @@ HTMLSourceElement[JC] def getAttributeNode(name: String): Attr
 HTMLSourceElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLSourceElement[JC] def getBoundingClientRect(): DOMRect
 HTMLSourceElement[JC] def getClientRects(): DOMRectList
-HTMLSourceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLSourceElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLSourceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLSourceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLSourceElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLSourceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLSourceElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLSourceElement[JC] def hasAttribute(name: String): Boolean
 HTMLSourceElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -10821,7 +10821,7 @@ HTMLSpanElement[JC] def before(nodes: Node | String*): Unit
 HTMLSpanElement[JC] def blur(): Unit
 HTMLSpanElement[JC] def childElementCount: Int
 HTMLSpanElement[JC] def childNodes: NodeList[Node]
-HTMLSpanElement[JC] def children: HTMLCollection
+HTMLSpanElement[JC] def children: HTMLCollection[Element]
 HTMLSpanElement[JC] var classList: DOMTokenList
 HTMLSpanElement[JC] var className: String
 HTMLSpanElement[JC] def click(): Unit
@@ -10848,9 +10848,9 @@ HTMLSpanElement[JC] def getAttributeNode(name: String): Attr
 HTMLSpanElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLSpanElement[JC] def getBoundingClientRect(): DOMRect
 HTMLSpanElement[JC] def getClientRects(): DOMRectList
-HTMLSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLSpanElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLSpanElement[JC] def hasAttribute(name: String): Boolean
 HTMLSpanElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11018,7 +11018,7 @@ HTMLStyleElement[JC] def before(nodes: Node | String*): Unit
 HTMLStyleElement[JC] def blur(): Unit
 HTMLStyleElement[JC] def childElementCount: Int
 HTMLStyleElement[JC] def childNodes: NodeList[Node]
-HTMLStyleElement[JC] def children: HTMLCollection
+HTMLStyleElement[JC] def children: HTMLCollection[Element]
 HTMLStyleElement[JC] var classList: DOMTokenList
 HTMLStyleElement[JC] var className: String
 HTMLStyleElement[JC] def click(): Unit
@@ -11045,9 +11045,9 @@ HTMLStyleElement[JC] def getAttributeNode(name: String): Attr
 HTMLStyleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLStyleElement[JC] def getBoundingClientRect(): DOMRect
 HTMLStyleElement[JC] def getClientRects(): DOMRectList
-HTMLStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLStyleElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLStyleElement[JC] def hasAttribute(name: String): Boolean
 HTMLStyleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11219,7 +11219,7 @@ HTMLTableCaptionElement[JC] def before(nodes: Node | String*): Unit
 HTMLTableCaptionElement[JC] def blur(): Unit
 HTMLTableCaptionElement[JC] def childElementCount: Int
 HTMLTableCaptionElement[JC] def childNodes: NodeList[Node]
-HTMLTableCaptionElement[JC] def children: HTMLCollection
+HTMLTableCaptionElement[JC] def children: HTMLCollection[Element]
 HTMLTableCaptionElement[JC] var classList: DOMTokenList
 HTMLTableCaptionElement[JC] var className: String
 HTMLTableCaptionElement[JC] def click(): Unit
@@ -11246,9 +11246,9 @@ HTMLTableCaptionElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableCaptionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableCaptionElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableCaptionElement[JC] def getClientRects(): DOMRectList
-HTMLTableCaptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableCaptionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableCaptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableCaptionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableCaptionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableCaptionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableCaptionElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableCaptionElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableCaptionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11417,7 +11417,7 @@ HTMLTableCellElement[JC] def blur(): Unit
 HTMLTableCellElement[JC] def cellIndex: Int
 HTMLTableCellElement[JC] def childElementCount: Int
 HTMLTableCellElement[JC] def childNodes: NodeList[Node]
-HTMLTableCellElement[JC] def children: HTMLCollection
+HTMLTableCellElement[JC] def children: HTMLCollection[Element]
 HTMLTableCellElement[JC] var classList: DOMTokenList
 HTMLTableCellElement[JC] var className: String
 HTMLTableCellElement[JC] def click(): Unit
@@ -11445,9 +11445,9 @@ HTMLTableCellElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableCellElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableCellElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableCellElement[JC] def getClientRects(): DOMRectList
-HTMLTableCellElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableCellElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableCellElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableCellElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableCellElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableCellElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableCellElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableCellElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableCellElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11617,7 +11617,7 @@ HTMLTableColElement[JC] def before(nodes: Node | String*): Unit
 HTMLTableColElement[JC] def blur(): Unit
 HTMLTableColElement[JC] def childElementCount: Int
 HTMLTableColElement[JC] def childNodes: NodeList[Node]
-HTMLTableColElement[JC] def children: HTMLCollection
+HTMLTableColElement[JC] def children: HTMLCollection[Element]
 HTMLTableColElement[JC] var classList: DOMTokenList
 HTMLTableColElement[JC] var className: String
 HTMLTableColElement[JC] def click(): Unit
@@ -11644,9 +11644,9 @@ HTMLTableColElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableColElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableColElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableColElement[JC] def getClientRects(): DOMRectList
-HTMLTableColElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableColElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableColElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableColElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableColElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableColElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableColElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableColElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableColElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11816,7 +11816,7 @@ HTMLTableElement[JC] def blur(): Unit
 HTMLTableElement[JC] var caption: HTMLTableCaptionElement
 HTMLTableElement[JC] def childElementCount: Int
 HTMLTableElement[JC] def childNodes: NodeList[Node]
-HTMLTableElement[JC] def children: HTMLCollection
+HTMLTableElement[JC] def children: HTMLCollection[Element]
 HTMLTableElement[JC] var classList: DOMTokenList
 HTMLTableElement[JC] var className: String
 HTMLTableElement[JC] def click(): Unit
@@ -11851,9 +11851,9 @@ HTMLTableElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableElement[JC] def getClientRects(): DOMRectList
-HTMLTableElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -11994,7 +11994,7 @@ HTMLTableElement[JC] def replaceChild(newChild: Node, oldChild: Node): Node
 HTMLTableElement[JC] def replaceChildren(nodes: Node | String*): Unit
 HTMLTableElement[JC] def requestFullscreen(options: FullscreenOptions?): js.Promise[Unit]
 HTMLTableElement[JC] def requestPointerLock(): Unit
-HTMLTableElement[JC] def rows: HTMLCollection
+HTMLTableElement[JC] def rows: HTMLCollection[Element]
 HTMLTableElement[JC] def scrollHeight: Int
 HTMLTableElement[JC] def scrollIntoView(top: Boolean?): Unit
 HTMLTableElement[JC] var scrollLeft: Double
@@ -12008,7 +12008,7 @@ HTMLTableElement[JC] var spellcheck: Boolean
 HTMLTableElement[JC] def style: CSSStyleDeclaration
 HTMLTableElement[JC] def style_ = (value: CSSStyleDeclaration): Unit
 HTMLTableElement[JC] def style_ = (value: String): Unit
-HTMLTableElement[JC] def tBodies: HTMLCollection
+HTMLTableElement[JC] def tBodies: HTMLCollection[Element]
 HTMLTableElement[JC] var tFoot: HTMLTableSectionElement
 HTMLTableElement[JC] var tHead: HTMLTableSectionElement
 HTMLTableElement[JC] var tabIndex: Int
@@ -12028,10 +12028,10 @@ HTMLTableRowElement[JC] def blur(): Unit
 HTMLTableRowElement[JC] var borderColor: js.Any
 HTMLTableRowElement[JC] var borderColorDark: js.Any
 HTMLTableRowElement[JC] var borderColorLight: js.Any
-HTMLTableRowElement[JC] def cells: HTMLCollection
+HTMLTableRowElement[JC] def cells: HTMLCollection[Element]
 HTMLTableRowElement[JC] def childElementCount: Int
 HTMLTableRowElement[JC] def childNodes: NodeList[Node]
-HTMLTableRowElement[JC] def children: HTMLCollection
+HTMLTableRowElement[JC] def children: HTMLCollection[Element]
 HTMLTableRowElement[JC] var classList: DOMTokenList
 HTMLTableRowElement[JC] var className: String
 HTMLTableRowElement[JC] def click(): Unit
@@ -12059,9 +12059,9 @@ HTMLTableRowElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableRowElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableRowElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableRowElement[JC] def getClientRects(): DOMRectList
-HTMLTableRowElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableRowElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableRowElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableRowElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableRowElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableRowElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableRowElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableRowElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableRowElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12233,7 +12233,7 @@ HTMLTableSectionElement[JC] def before(nodes: Node | String*): Unit
 HTMLTableSectionElement[JC] def blur(): Unit
 HTMLTableSectionElement[JC] def childElementCount: Int
 HTMLTableSectionElement[JC] def childNodes: NodeList[Node]
-HTMLTableSectionElement[JC] def children: HTMLCollection
+HTMLTableSectionElement[JC] def children: HTMLCollection[Element]
 HTMLTableSectionElement[JC] var classList: DOMTokenList
 HTMLTableSectionElement[JC] var className: String
 HTMLTableSectionElement[JC] def click(): Unit
@@ -12261,9 +12261,9 @@ HTMLTableSectionElement[JC] def getAttributeNode(name: String): Attr
 HTMLTableSectionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTableSectionElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTableSectionElement[JC] def getClientRects(): DOMRectList
-HTMLTableSectionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTableSectionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTableSectionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTableSectionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTableSectionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTableSectionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTableSectionElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTableSectionElement[JC] def hasAttribute(name: String): Boolean
 HTMLTableSectionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12404,7 +12404,7 @@ HTMLTableSectionElement[JC] def replaceChild(newChild: Node, oldChild: Node): No
 HTMLTableSectionElement[JC] def replaceChildren(nodes: Node | String*): Unit
 HTMLTableSectionElement[JC] def requestFullscreen(options: FullscreenOptions?): js.Promise[Unit]
 HTMLTableSectionElement[JC] def requestPointerLock(): Unit
-HTMLTableSectionElement[JC] def rows: HTMLCollection
+HTMLTableSectionElement[JC] def rows: HTMLCollection[Element]
 HTMLTableSectionElement[JC] def scrollHeight: Int
 HTMLTableSectionElement[JC] def scrollIntoView(top: Boolean?): Unit
 HTMLTableSectionElement[JC] var scrollLeft: Double
@@ -12436,7 +12436,7 @@ HTMLTextAreaElement[JC] def blur(): Unit
 HTMLTextAreaElement[JC] def checkValidity(): Boolean
 HTMLTextAreaElement[JC] def childElementCount: Int
 HTMLTextAreaElement[JC] def childNodes: NodeList[Node]
-HTMLTextAreaElement[JC] def children: HTMLCollection
+HTMLTextAreaElement[JC] def children: HTMLCollection[Element]
 HTMLTextAreaElement[JC] var classList: DOMTokenList
 HTMLTextAreaElement[JC] var className: String
 HTMLTextAreaElement[JC] def click(): Unit
@@ -12467,9 +12467,9 @@ HTMLTextAreaElement[JC] def getAttributeNode(name: String): Attr
 HTMLTextAreaElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTextAreaElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTextAreaElement[JC] def getClientRects(): DOMRectList
-HTMLTextAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTextAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTextAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTextAreaElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTextAreaElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTextAreaElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTextAreaElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTextAreaElement[JC] def hasAttribute(name: String): Boolean
 HTMLTextAreaElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12655,7 +12655,7 @@ HTMLTitleElement[JC] def before(nodes: Node | String*): Unit
 HTMLTitleElement[JC] def blur(): Unit
 HTMLTitleElement[JC] def childElementCount: Int
 HTMLTitleElement[JC] def childNodes: NodeList[Node]
-HTMLTitleElement[JC] def children: HTMLCollection
+HTMLTitleElement[JC] def children: HTMLCollection[Element]
 HTMLTitleElement[JC] var classList: DOMTokenList
 HTMLTitleElement[JC] var className: String
 HTMLTitleElement[JC] def click(): Unit
@@ -12682,9 +12682,9 @@ HTMLTitleElement[JC] def getAttributeNode(name: String): Attr
 HTMLTitleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTitleElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTitleElement[JC] def getClientRects(): DOMRectList
-HTMLTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTitleElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTitleElement[JC] def hasAttribute(name: String): Boolean
 HTMLTitleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -12853,7 +12853,7 @@ HTMLTrackElement[JC] def before(nodes: Node | String*): Unit
 HTMLTrackElement[JC] def blur(): Unit
 HTMLTrackElement[JC] def childElementCount: Int
 HTMLTrackElement[JC] def childNodes: NodeList[Node]
-HTMLTrackElement[JC] def children: HTMLCollection
+HTMLTrackElement[JC] def children: HTMLCollection[Element]
 HTMLTrackElement[JC] var classList: DOMTokenList
 HTMLTrackElement[JC] var className: String
 HTMLTrackElement[JC] def click(): Unit
@@ -12880,9 +12880,9 @@ HTMLTrackElement[JC] def getAttributeNode(name: String): Attr
 HTMLTrackElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLTrackElement[JC] def getBoundingClientRect(): DOMRect
 HTMLTrackElement[JC] def getClientRects(): DOMRectList
-HTMLTrackElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLTrackElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLTrackElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLTrackElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLTrackElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLTrackElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLTrackElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLTrackElement[JC] def hasAttribute(name: String): Boolean
 HTMLTrackElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -13055,7 +13055,7 @@ HTMLUListElement[JC] def before(nodes: Node | String*): Unit
 HTMLUListElement[JC] def blur(): Unit
 HTMLUListElement[JC] def childElementCount: Int
 HTMLUListElement[JC] def childNodes: NodeList[Node]
-HTMLUListElement[JC] def children: HTMLCollection
+HTMLUListElement[JC] def children: HTMLCollection[Element]
 HTMLUListElement[JC] var classList: DOMTokenList
 HTMLUListElement[JC] var className: String
 HTMLUListElement[JC] def click(): Unit
@@ -13082,9 +13082,9 @@ HTMLUListElement[JC] def getAttributeNode(name: String): Attr
 HTMLUListElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLUListElement[JC] def getBoundingClientRect(): DOMRect
 HTMLUListElement[JC] def getClientRects(): DOMRectList
-HTMLUListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLUListElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLUListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLUListElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLUListElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLUListElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLUListElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLUListElement[JC] def hasAttribute(name: String): Boolean
 HTMLUListElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -13252,7 +13252,7 @@ HTMLUnknownElement[JC] def before(nodes: Node | String*): Unit
 HTMLUnknownElement[JC] def blur(): Unit
 HTMLUnknownElement[JC] def childElementCount: Int
 HTMLUnknownElement[JC] def childNodes: NodeList[Node]
-HTMLUnknownElement[JC] def children: HTMLCollection
+HTMLUnknownElement[JC] def children: HTMLCollection[Element]
 HTMLUnknownElement[JC] var classList: DOMTokenList
 HTMLUnknownElement[JC] var className: String
 HTMLUnknownElement[JC] def click(): Unit
@@ -13279,9 +13279,9 @@ HTMLUnknownElement[JC] def getAttributeNode(name: String): Attr
 HTMLUnknownElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLUnknownElement[JC] def getBoundingClientRect(): DOMRect
 HTMLUnknownElement[JC] def getClientRects(): DOMRectList
-HTMLUnknownElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLUnknownElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLUnknownElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLUnknownElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLUnknownElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLUnknownElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLUnknownElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLUnknownElement[JC] def hasAttribute(name: String): Boolean
 HTMLUnknownElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -13453,7 +13453,7 @@ HTMLVideoElement[JC] def buffered: TimeRanges
 HTMLVideoElement[JC] def canPlayType(`type`: String): String
 HTMLVideoElement[JC] def childElementCount: Int
 HTMLVideoElement[JC] def childNodes: NodeList[Node]
-HTMLVideoElement[JC] def children: HTMLCollection
+HTMLVideoElement[JC] def children: HTMLCollection[Element]
 HTMLVideoElement[JC] var classList: DOMTokenList
 HTMLVideoElement[JC] var className: String
 HTMLVideoElement[JC] def click(): Unit
@@ -13487,9 +13487,9 @@ HTMLVideoElement[JC] def getAttributeNode(name: String): Attr
 HTMLVideoElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 HTMLVideoElement[JC] def getBoundingClientRect(): DOMRect
 HTMLVideoElement[JC] def getClientRects(): DOMRectList
-HTMLVideoElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-HTMLVideoElement[JC] def getElementsByTagName(name: String): HTMLCollection
-HTMLVideoElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+HTMLVideoElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+HTMLVideoElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+HTMLVideoElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 HTMLVideoElement[JC] var gotpointercapture: js.Function1[PointerEvent, _]
 HTMLVideoElement[JC] def hasAttribute(name: String): Boolean
 HTMLVideoElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
@@ -14845,7 +14845,7 @@ PannerNode[JT] def setOrientation(x: Double?, y: Double?, z: Double?): Unit
 PannerNode[JT] def setPosition(x: Double?, y: Double?, z: Double?): Unit
 PannerNode[JT] def setVelocity(x: Double?, y: Double?, z: Double?): Unit
 ParentNode[JT] def childElementCount: Int
-ParentNode[JT] def children: HTMLCollection
+ParentNode[JT] def children: HTMLCollection[Element]
 ParentNode[JT] def firstElementChild: Element
 ParentNode[JT] def lastElementChild: Element
 ParentNode[JT] def replaceChildren(nodes: Node | String*): Unit
@@ -15227,7 +15227,7 @@ SVGAElement[JC] def baseURI: String
 SVGAElement[JC] def before(nodes: Node | String*): Unit
 SVGAElement[JC] def childElementCount: Int
 SVGAElement[JC] def childNodes: NodeList[Node]
-SVGAElement[JC] def children: HTMLCollection
+SVGAElement[JC] def children: HTMLCollection[Element]
 SVGAElement[JC] var classList: DOMTokenList
 SVGAElement[JC] var className: SVGAnimatedString
 SVGAElement[JC] def clientHeight: Int
@@ -15250,9 +15250,9 @@ SVGAElement[JC] def getBBox(): SVGRect
 SVGAElement[JC] def getBoundingClientRect(): DOMRect
 SVGAElement[JC] def getCTM(): SVGMatrix
 SVGAElement[JC] def getClientRects(): DOMRectList
-SVGAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGAElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGAElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGAElement[JC] def getScreenCTM(): SVGMatrix
 SVGAElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGAElement[JC] def hasAttribute(name: String): Boolean
@@ -15392,7 +15392,7 @@ SVGCircleElement[JC] def baseURI: String
 SVGCircleElement[JC] def before(nodes: Node | String*): Unit
 SVGCircleElement[JC] def childElementCount: Int
 SVGCircleElement[JC] def childNodes: NodeList[Node]
-SVGCircleElement[JC] def children: HTMLCollection
+SVGCircleElement[JC] def children: HTMLCollection[Element]
 SVGCircleElement[JC] var classList: DOMTokenList
 SVGCircleElement[JC] var className: SVGAnimatedString
 SVGCircleElement[JC] def clientHeight: Int
@@ -15417,9 +15417,9 @@ SVGCircleElement[JC] def getBBox(): SVGRect
 SVGCircleElement[JC] def getBoundingClientRect(): DOMRect
 SVGCircleElement[JC] def getCTM(): SVGMatrix
 SVGCircleElement[JC] def getClientRects(): DOMRectList
-SVGCircleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGCircleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGCircleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGCircleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGCircleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGCircleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGCircleElement[JC] def getScreenCTM(): SVGMatrix
 SVGCircleElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGCircleElement[JC] def hasAttribute(name: String): Boolean
@@ -15523,7 +15523,7 @@ SVGClipPathElement[JC] def baseURI: String
 SVGClipPathElement[JC] def before(nodes: Node | String*): Unit
 SVGClipPathElement[JC] def childElementCount: Int
 SVGClipPathElement[JC] def childNodes: NodeList[Node]
-SVGClipPathElement[JC] def children: HTMLCollection
+SVGClipPathElement[JC] def children: HTMLCollection[Element]
 SVGClipPathElement[JC] var classList: DOMTokenList
 SVGClipPathElement[JC] var className: SVGAnimatedString
 SVGClipPathElement[JC] def clientHeight: Int
@@ -15547,9 +15547,9 @@ SVGClipPathElement[JC] def getBBox(): SVGRect
 SVGClipPathElement[JC] def getBoundingClientRect(): DOMRect
 SVGClipPathElement[JC] def getCTM(): SVGMatrix
 SVGClipPathElement[JC] def getClientRects(): DOMRectList
-SVGClipPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGClipPathElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGClipPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGClipPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGClipPathElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGClipPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGClipPathElement[JC] def getScreenCTM(): SVGMatrix
 SVGClipPathElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGClipPathElement[JC] def hasAttribute(name: String): Boolean
@@ -15650,7 +15650,7 @@ SVGComponentTransferFunctionElement[JC] def baseURI: String
 SVGComponentTransferFunctionElement[JC] def before(nodes: Node | String*): Unit
 SVGComponentTransferFunctionElement[JC] def childElementCount: Int
 SVGComponentTransferFunctionElement[JC] def childNodes: NodeList[Node]
-SVGComponentTransferFunctionElement[JC] def children: HTMLCollection
+SVGComponentTransferFunctionElement[JC] def children: HTMLCollection[Element]
 SVGComponentTransferFunctionElement[JC] var classList: DOMTokenList
 SVGComponentTransferFunctionElement[JC] def clientHeight: Int
 SVGComponentTransferFunctionElement[JC] def clientLeft: Int
@@ -15669,9 +15669,9 @@ SVGComponentTransferFunctionElement[JC] def getAttributeNode(name: String): Attr
 SVGComponentTransferFunctionElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGComponentTransferFunctionElement[JC] def getBoundingClientRect(): DOMRect
 SVGComponentTransferFunctionElement[JC] def getClientRects(): DOMRectList
-SVGComponentTransferFunctionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGComponentTransferFunctionElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGComponentTransferFunctionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGComponentTransferFunctionElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGComponentTransferFunctionElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGComponentTransferFunctionElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGComponentTransferFunctionElement[JC] def hasAttribute(name: String): Boolean
 SVGComponentTransferFunctionElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGComponentTransferFunctionElement[JC] def hasAttributes(): Boolean
@@ -15771,7 +15771,7 @@ SVGDefsElement[JC] def baseURI: String
 SVGDefsElement[JC] def before(nodes: Node | String*): Unit
 SVGDefsElement[JC] def childElementCount: Int
 SVGDefsElement[JC] def childNodes: NodeList[Node]
-SVGDefsElement[JC] def children: HTMLCollection
+SVGDefsElement[JC] def children: HTMLCollection[Element]
 SVGDefsElement[JC] var classList: DOMTokenList
 SVGDefsElement[JC] var className: SVGAnimatedString
 SVGDefsElement[JC] def clientHeight: Int
@@ -15794,9 +15794,9 @@ SVGDefsElement[JC] def getBBox(): SVGRect
 SVGDefsElement[JC] def getBoundingClientRect(): DOMRect
 SVGDefsElement[JC] def getCTM(): SVGMatrix
 SVGDefsElement[JC] def getClientRects(): DOMRectList
-SVGDefsElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGDefsElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGDefsElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGDefsElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGDefsElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGDefsElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGDefsElement[JC] def getScreenCTM(): SVGMatrix
 SVGDefsElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGDefsElement[JC] def hasAttribute(name: String): Boolean
@@ -15896,7 +15896,7 @@ SVGDescElement[JC] def baseURI: String
 SVGDescElement[JC] def before(nodes: Node | String*): Unit
 SVGDescElement[JC] def childElementCount: Int
 SVGDescElement[JC] def childNodes: NodeList[Node]
-SVGDescElement[JC] def children: HTMLCollection
+SVGDescElement[JC] def children: HTMLCollection[Element]
 SVGDescElement[JC] var classList: DOMTokenList
 SVGDescElement[JC] var className: SVGAnimatedString
 SVGDescElement[JC] def clientHeight: Int
@@ -15915,9 +15915,9 @@ SVGDescElement[JC] def getAttributeNode(name: String): Attr
 SVGDescElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGDescElement[JC] def getBoundingClientRect(): DOMRect
 SVGDescElement[JC] def getClientRects(): DOMRectList
-SVGDescElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGDescElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGDescElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGDescElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGDescElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGDescElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGDescElement[JC] def hasAttribute(name: String): Boolean
 SVGDescElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGDescElement[JC] def hasAttributes(): Boolean
@@ -16009,7 +16009,7 @@ SVGElement[JC] def baseURI: String
 SVGElement[JC] def before(nodes: Node | String*): Unit
 SVGElement[JC] def childElementCount: Int
 SVGElement[JC] def childNodes: NodeList[Node]
-SVGElement[JC] def children: HTMLCollection
+SVGElement[JC] def children: HTMLCollection[Element]
 SVGElement[JC] var classList: DOMTokenList
 SVGElement[JC] def clientHeight: Int
 SVGElement[JC] def clientLeft: Int
@@ -16027,9 +16027,9 @@ SVGElement[JC] def getAttributeNode(name: String): Attr
 SVGElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGElement[JC] def getBoundingClientRect(): DOMRect
 SVGElement[JC] def getClientRects(): DOMRectList
-SVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGElement[JC] def hasAttribute(name: String): Boolean
 SVGElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGElement[JC] def hasAttributes(): Boolean
@@ -16133,7 +16133,7 @@ SVGEllipseElement[JC] def baseURI: String
 SVGEllipseElement[JC] def before(nodes: Node | String*): Unit
 SVGEllipseElement[JC] def childElementCount: Int
 SVGEllipseElement[JC] def childNodes: NodeList[Node]
-SVGEllipseElement[JC] def children: HTMLCollection
+SVGEllipseElement[JC] def children: HTMLCollection[Element]
 SVGEllipseElement[JC] var classList: DOMTokenList
 SVGEllipseElement[JC] var className: SVGAnimatedString
 SVGEllipseElement[JC] def clientHeight: Int
@@ -16158,9 +16158,9 @@ SVGEllipseElement[JC] def getBBox(): SVGRect
 SVGEllipseElement[JC] def getBoundingClientRect(): DOMRect
 SVGEllipseElement[JC] def getCTM(): SVGMatrix
 SVGEllipseElement[JC] def getClientRects(): DOMRectList
-SVGEllipseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGEllipseElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGEllipseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGEllipseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGEllipseElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGEllipseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGEllipseElement[JC] def getScreenCTM(): SVGMatrix
 SVGEllipseElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGEllipseElement[JC] def hasAttribute(name: String): Boolean
@@ -16269,7 +16269,7 @@ SVGFEBlendElement[JC] def baseURI: String
 SVGFEBlendElement[JC] def before(nodes: Node | String*): Unit
 SVGFEBlendElement[JC] def childElementCount: Int
 SVGFEBlendElement[JC] def childNodes: NodeList[Node]
-SVGFEBlendElement[JC] def children: HTMLCollection
+SVGFEBlendElement[JC] def children: HTMLCollection[Element]
 SVGFEBlendElement[JC] var classList: DOMTokenList
 SVGFEBlendElement[JC] var className: SVGAnimatedString
 SVGFEBlendElement[JC] def clientHeight: Int
@@ -16288,9 +16288,9 @@ SVGFEBlendElement[JC] def getAttributeNode(name: String): Attr
 SVGFEBlendElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEBlendElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEBlendElement[JC] def getClientRects(): DOMRectList
-SVGFEBlendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEBlendElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEBlendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEBlendElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEBlendElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEBlendElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEBlendElement[JC] def hasAttribute(name: String): Boolean
 SVGFEBlendElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEBlendElement[JC] def hasAttributes(): Boolean
@@ -16394,7 +16394,7 @@ SVGFEColorMatrixElement[JC] def baseURI: String
 SVGFEColorMatrixElement[JC] def before(nodes: Node | String*): Unit
 SVGFEColorMatrixElement[JC] def childElementCount: Int
 SVGFEColorMatrixElement[JC] def childNodes: NodeList[Node]
-SVGFEColorMatrixElement[JC] def children: HTMLCollection
+SVGFEColorMatrixElement[JC] def children: HTMLCollection[Element]
 SVGFEColorMatrixElement[JC] var classList: DOMTokenList
 SVGFEColorMatrixElement[JC] var className: SVGAnimatedString
 SVGFEColorMatrixElement[JC] def clientHeight: Int
@@ -16413,9 +16413,9 @@ SVGFEColorMatrixElement[JC] def getAttributeNode(name: String): Attr
 SVGFEColorMatrixElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEColorMatrixElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEColorMatrixElement[JC] def getClientRects(): DOMRectList
-SVGFEColorMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEColorMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEColorMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEColorMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEColorMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEColorMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEColorMatrixElement[JC] def hasAttribute(name: String): Boolean
 SVGFEColorMatrixElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEColorMatrixElement[JC] def hasAttributes(): Boolean
@@ -16518,7 +16518,7 @@ SVGFEComponentTransferElement[JC] def baseURI: String
 SVGFEComponentTransferElement[JC] def before(nodes: Node | String*): Unit
 SVGFEComponentTransferElement[JC] def childElementCount: Int
 SVGFEComponentTransferElement[JC] def childNodes: NodeList[Node]
-SVGFEComponentTransferElement[JC] def children: HTMLCollection
+SVGFEComponentTransferElement[JC] def children: HTMLCollection[Element]
 SVGFEComponentTransferElement[JC] var classList: DOMTokenList
 SVGFEComponentTransferElement[JC] var className: SVGAnimatedString
 SVGFEComponentTransferElement[JC] def clientHeight: Int
@@ -16537,9 +16537,9 @@ SVGFEComponentTransferElement[JC] def getAttributeNode(name: String): Attr
 SVGFEComponentTransferElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEComponentTransferElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEComponentTransferElement[JC] def getClientRects(): DOMRectList
-SVGFEComponentTransferElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEComponentTransferElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEComponentTransferElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEComponentTransferElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEComponentTransferElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEComponentTransferElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEComponentTransferElement[JC] def hasAttribute(name: String): Boolean
 SVGFEComponentTransferElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEComponentTransferElement[JC] def hasAttributes(): Boolean
@@ -16635,7 +16635,7 @@ SVGFECompositeElement[JC] def baseURI: String
 SVGFECompositeElement[JC] def before(nodes: Node | String*): Unit
 SVGFECompositeElement[JC] def childElementCount: Int
 SVGFECompositeElement[JC] def childNodes: NodeList[Node]
-SVGFECompositeElement[JC] def children: HTMLCollection
+SVGFECompositeElement[JC] def children: HTMLCollection[Element]
 SVGFECompositeElement[JC] var classList: DOMTokenList
 SVGFECompositeElement[JC] var className: SVGAnimatedString
 SVGFECompositeElement[JC] def clientHeight: Int
@@ -16654,9 +16654,9 @@ SVGFECompositeElement[JC] def getAttributeNode(name: String): Attr
 SVGFECompositeElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFECompositeElement[JC] def getBoundingClientRect(): DOMRect
 SVGFECompositeElement[JC] def getClientRects(): DOMRectList
-SVGFECompositeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFECompositeElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFECompositeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFECompositeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFECompositeElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFECompositeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFECompositeElement[JC] def hasAttribute(name: String): Boolean
 SVGFECompositeElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFECompositeElement[JC] def hasAttributes(): Boolean
@@ -16766,7 +16766,7 @@ SVGFEConvolveMatrixElement[JC] def before(nodes: Node | String*): Unit
 SVGFEConvolveMatrixElement[JC] def bias: SVGAnimatedNumber
 SVGFEConvolveMatrixElement[JC] def childElementCount: Int
 SVGFEConvolveMatrixElement[JC] def childNodes: NodeList[Node]
-SVGFEConvolveMatrixElement[JC] def children: HTMLCollection
+SVGFEConvolveMatrixElement[JC] def children: HTMLCollection[Element]
 SVGFEConvolveMatrixElement[JC] var classList: DOMTokenList
 SVGFEConvolveMatrixElement[JC] var className: SVGAnimatedString
 SVGFEConvolveMatrixElement[JC] def clientHeight: Int
@@ -16787,9 +16787,9 @@ SVGFEConvolveMatrixElement[JC] def getAttributeNode(name: String): Attr
 SVGFEConvolveMatrixElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEConvolveMatrixElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEConvolveMatrixElement[JC] def getClientRects(): DOMRectList
-SVGFEConvolveMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEConvolveMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEConvolveMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEConvolveMatrixElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEConvolveMatrixElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEConvolveMatrixElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEConvolveMatrixElement[JC] def hasAttribute(name: String): Boolean
 SVGFEConvolveMatrixElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEConvolveMatrixElement[JC] def hasAttributes(): Boolean
@@ -16897,7 +16897,7 @@ SVGFEDiffuseLightingElement[JC] def baseURI: String
 SVGFEDiffuseLightingElement[JC] def before(nodes: Node | String*): Unit
 SVGFEDiffuseLightingElement[JC] def childElementCount: Int
 SVGFEDiffuseLightingElement[JC] def childNodes: NodeList[Node]
-SVGFEDiffuseLightingElement[JC] def children: HTMLCollection
+SVGFEDiffuseLightingElement[JC] def children: HTMLCollection[Element]
 SVGFEDiffuseLightingElement[JC] var classList: DOMTokenList
 SVGFEDiffuseLightingElement[JC] var className: SVGAnimatedString
 SVGFEDiffuseLightingElement[JC] def clientHeight: Int
@@ -16917,9 +16917,9 @@ SVGFEDiffuseLightingElement[JC] def getAttributeNode(name: String): Attr
 SVGFEDiffuseLightingElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEDiffuseLightingElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEDiffuseLightingElement[JC] def getClientRects(): DOMRectList
-SVGFEDiffuseLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEDiffuseLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEDiffuseLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEDiffuseLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEDiffuseLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEDiffuseLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEDiffuseLightingElement[JC] def hasAttribute(name: String): Boolean
 SVGFEDiffuseLightingElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEDiffuseLightingElement[JC] def hasAttributes(): Boolean
@@ -17018,7 +17018,7 @@ SVGFEDisplacementMapElement[JC] def baseURI: String
 SVGFEDisplacementMapElement[JC] def before(nodes: Node | String*): Unit
 SVGFEDisplacementMapElement[JC] def childElementCount: Int
 SVGFEDisplacementMapElement[JC] def childNodes: NodeList[Node]
-SVGFEDisplacementMapElement[JC] def children: HTMLCollection
+SVGFEDisplacementMapElement[JC] def children: HTMLCollection[Element]
 SVGFEDisplacementMapElement[JC] var classList: DOMTokenList
 SVGFEDisplacementMapElement[JC] var className: SVGAnimatedString
 SVGFEDisplacementMapElement[JC] def clientHeight: Int
@@ -17037,9 +17037,9 @@ SVGFEDisplacementMapElement[JC] def getAttributeNode(name: String): Attr
 SVGFEDisplacementMapElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEDisplacementMapElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEDisplacementMapElement[JC] def getClientRects(): DOMRectList
-SVGFEDisplacementMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEDisplacementMapElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEDisplacementMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEDisplacementMapElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEDisplacementMapElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEDisplacementMapElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEDisplacementMapElement[JC] def hasAttribute(name: String): Boolean
 SVGFEDisplacementMapElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEDisplacementMapElement[JC] def hasAttributes(): Boolean
@@ -17145,7 +17145,7 @@ SVGFEDistantLightElement[JC] def baseURI: String
 SVGFEDistantLightElement[JC] def before(nodes: Node | String*): Unit
 SVGFEDistantLightElement[JC] def childElementCount: Int
 SVGFEDistantLightElement[JC] def childNodes: NodeList[Node]
-SVGFEDistantLightElement[JC] def children: HTMLCollection
+SVGFEDistantLightElement[JC] def children: HTMLCollection[Element]
 SVGFEDistantLightElement[JC] var classList: DOMTokenList
 SVGFEDistantLightElement[JC] def clientHeight: Int
 SVGFEDistantLightElement[JC] def clientLeft: Int
@@ -17164,9 +17164,9 @@ SVGFEDistantLightElement[JC] def getAttributeNode(name: String): Attr
 SVGFEDistantLightElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEDistantLightElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEDistantLightElement[JC] def getClientRects(): DOMRectList
-SVGFEDistantLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEDistantLightElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEDistantLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEDistantLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEDistantLightElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEDistantLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEDistantLightElement[JC] def hasAttribute(name: String): Boolean
 SVGFEDistantLightElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEDistantLightElement[JC] def hasAttributes(): Boolean
@@ -17255,7 +17255,7 @@ SVGFEFloodElement[JC] def baseURI: String
 SVGFEFloodElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFloodElement[JC] def childElementCount: Int
 SVGFEFloodElement[JC] def childNodes: NodeList[Node]
-SVGFEFloodElement[JC] def children: HTMLCollection
+SVGFEFloodElement[JC] def children: HTMLCollection[Element]
 SVGFEFloodElement[JC] var classList: DOMTokenList
 SVGFEFloodElement[JC] var className: SVGAnimatedString
 SVGFEFloodElement[JC] def clientHeight: Int
@@ -17274,9 +17274,9 @@ SVGFEFloodElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFloodElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFloodElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFloodElement[JC] def getClientRects(): DOMRectList
-SVGFEFloodElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFloodElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFloodElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFloodElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFloodElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFloodElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFloodElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFloodElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFloodElement[JC] def hasAttributes(): Boolean
@@ -17372,7 +17372,7 @@ SVGFEFuncAElement[JC] def baseURI: String
 SVGFEFuncAElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncAElement[JC] def childElementCount: Int
 SVGFEFuncAElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncAElement[JC] def children: HTMLCollection
+SVGFEFuncAElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncAElement[JC] var classList: DOMTokenList
 SVGFEFuncAElement[JC] def clientHeight: Int
 SVGFEFuncAElement[JC] def clientLeft: Int
@@ -17391,9 +17391,9 @@ SVGFEFuncAElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncAElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncAElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncAElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncAElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncAElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncAElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncAElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncAElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncAElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncAElement[JC] def hasAttributes(): Boolean
@@ -17488,7 +17488,7 @@ SVGFEFuncBElement[JC] def baseURI: String
 SVGFEFuncBElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncBElement[JC] def childElementCount: Int
 SVGFEFuncBElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncBElement[JC] def children: HTMLCollection
+SVGFEFuncBElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncBElement[JC] var classList: DOMTokenList
 SVGFEFuncBElement[JC] def clientHeight: Int
 SVGFEFuncBElement[JC] def clientLeft: Int
@@ -17507,9 +17507,9 @@ SVGFEFuncBElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncBElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncBElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncBElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncBElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncBElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncBElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncBElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncBElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncBElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncBElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncBElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncBElement[JC] def hasAttributes(): Boolean
@@ -17604,7 +17604,7 @@ SVGFEFuncGElement[JC] def baseURI: String
 SVGFEFuncGElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncGElement[JC] def childElementCount: Int
 SVGFEFuncGElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncGElement[JC] def children: HTMLCollection
+SVGFEFuncGElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncGElement[JC] var classList: DOMTokenList
 SVGFEFuncGElement[JC] def clientHeight: Int
 SVGFEFuncGElement[JC] def clientLeft: Int
@@ -17623,9 +17623,9 @@ SVGFEFuncGElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncGElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncGElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncGElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncGElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncGElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncGElement[JC] def hasAttributes(): Boolean
@@ -17720,7 +17720,7 @@ SVGFEFuncRElement[JC] def baseURI: String
 SVGFEFuncRElement[JC] def before(nodes: Node | String*): Unit
 SVGFEFuncRElement[JC] def childElementCount: Int
 SVGFEFuncRElement[JC] def childNodes: NodeList[Node]
-SVGFEFuncRElement[JC] def children: HTMLCollection
+SVGFEFuncRElement[JC] def children: HTMLCollection[Element]
 SVGFEFuncRElement[JC] var classList: DOMTokenList
 SVGFEFuncRElement[JC] def clientHeight: Int
 SVGFEFuncRElement[JC] def clientLeft: Int
@@ -17739,9 +17739,9 @@ SVGFEFuncRElement[JC] def getAttributeNode(name: String): Attr
 SVGFEFuncRElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEFuncRElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEFuncRElement[JC] def getClientRects(): DOMRectList
-SVGFEFuncRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEFuncRElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEFuncRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEFuncRElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEFuncRElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEFuncRElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEFuncRElement[JC] def hasAttribute(name: String): Boolean
 SVGFEFuncRElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEFuncRElement[JC] def hasAttributes(): Boolean
@@ -17835,7 +17835,7 @@ SVGFEGaussianBlurElement[JC] def baseURI: String
 SVGFEGaussianBlurElement[JC] def before(nodes: Node | String*): Unit
 SVGFEGaussianBlurElement[JC] def childElementCount: Int
 SVGFEGaussianBlurElement[JC] def childNodes: NodeList[Node]
-SVGFEGaussianBlurElement[JC] def children: HTMLCollection
+SVGFEGaussianBlurElement[JC] def children: HTMLCollection[Element]
 SVGFEGaussianBlurElement[JC] var classList: DOMTokenList
 SVGFEGaussianBlurElement[JC] var className: SVGAnimatedString
 SVGFEGaussianBlurElement[JC] def clientHeight: Int
@@ -17854,9 +17854,9 @@ SVGFEGaussianBlurElement[JC] def getAttributeNode(name: String): Attr
 SVGFEGaussianBlurElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEGaussianBlurElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEGaussianBlurElement[JC] def getClientRects(): DOMRectList
-SVGFEGaussianBlurElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEGaussianBlurElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEGaussianBlurElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEGaussianBlurElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEGaussianBlurElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEGaussianBlurElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEGaussianBlurElement[JC] def hasAttribute(name: String): Boolean
 SVGFEGaussianBlurElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEGaussianBlurElement[JC] def hasAttributes(): Boolean
@@ -17955,7 +17955,7 @@ SVGFEImageElement[JC] def baseURI: String
 SVGFEImageElement[JC] def before(nodes: Node | String*): Unit
 SVGFEImageElement[JC] def childElementCount: Int
 SVGFEImageElement[JC] def childNodes: NodeList[Node]
-SVGFEImageElement[JC] def children: HTMLCollection
+SVGFEImageElement[JC] def children: HTMLCollection[Element]
 SVGFEImageElement[JC] var classList: DOMTokenList
 SVGFEImageElement[JC] var className: SVGAnimatedString
 SVGFEImageElement[JC] def clientHeight: Int
@@ -17975,9 +17975,9 @@ SVGFEImageElement[JC] def getAttributeNode(name: String): Attr
 SVGFEImageElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEImageElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEImageElement[JC] def getClientRects(): DOMRectList
-SVGFEImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEImageElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEImageElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEImageElement[JC] def hasAttribute(name: String): Boolean
 SVGFEImageElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEImageElement[JC] def hasAttributes(): Boolean
@@ -18076,7 +18076,7 @@ SVGFEMergeElement[JC] def baseURI: String
 SVGFEMergeElement[JC] def before(nodes: Node | String*): Unit
 SVGFEMergeElement[JC] def childElementCount: Int
 SVGFEMergeElement[JC] def childNodes: NodeList[Node]
-SVGFEMergeElement[JC] def children: HTMLCollection
+SVGFEMergeElement[JC] def children: HTMLCollection[Element]
 SVGFEMergeElement[JC] var classList: DOMTokenList
 SVGFEMergeElement[JC] var className: SVGAnimatedString
 SVGFEMergeElement[JC] def clientHeight: Int
@@ -18095,9 +18095,9 @@ SVGFEMergeElement[JC] def getAttributeNode(name: String): Attr
 SVGFEMergeElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEMergeElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEMergeElement[JC] def getClientRects(): DOMRectList
-SVGFEMergeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEMergeElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEMergeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEMergeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEMergeElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEMergeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEMergeElement[JC] def hasAttribute(name: String): Boolean
 SVGFEMergeElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEMergeElement[JC] def hasAttributes(): Boolean
@@ -18192,7 +18192,7 @@ SVGFEMergeNodeElement[JC] def baseURI: String
 SVGFEMergeNodeElement[JC] def before(nodes: Node | String*): Unit
 SVGFEMergeNodeElement[JC] def childElementCount: Int
 SVGFEMergeNodeElement[JC] def childNodes: NodeList[Node]
-SVGFEMergeNodeElement[JC] def children: HTMLCollection
+SVGFEMergeNodeElement[JC] def children: HTMLCollection[Element]
 SVGFEMergeNodeElement[JC] var classList: DOMTokenList
 SVGFEMergeNodeElement[JC] def clientHeight: Int
 SVGFEMergeNodeElement[JC] def clientLeft: Int
@@ -18210,9 +18210,9 @@ SVGFEMergeNodeElement[JC] def getAttributeNode(name: String): Attr
 SVGFEMergeNodeElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEMergeNodeElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEMergeNodeElement[JC] def getClientRects(): DOMRectList
-SVGFEMergeNodeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEMergeNodeElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEMergeNodeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEMergeNodeElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEMergeNodeElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEMergeNodeElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEMergeNodeElement[JC] def hasAttribute(name: String): Boolean
 SVGFEMergeNodeElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEMergeNodeElement[JC] def hasAttributes(): Boolean
@@ -18302,7 +18302,7 @@ SVGFEMorphologyElement[JC] def baseURI: String
 SVGFEMorphologyElement[JC] def before(nodes: Node | String*): Unit
 SVGFEMorphologyElement[JC] def childElementCount: Int
 SVGFEMorphologyElement[JC] def childNodes: NodeList[Node]
-SVGFEMorphologyElement[JC] def children: HTMLCollection
+SVGFEMorphologyElement[JC] def children: HTMLCollection[Element]
 SVGFEMorphologyElement[JC] var classList: DOMTokenList
 SVGFEMorphologyElement[JC] var className: SVGAnimatedString
 SVGFEMorphologyElement[JC] def clientHeight: Int
@@ -18321,9 +18321,9 @@ SVGFEMorphologyElement[JC] def getAttributeNode(name: String): Attr
 SVGFEMorphologyElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEMorphologyElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEMorphologyElement[JC] def getClientRects(): DOMRectList
-SVGFEMorphologyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEMorphologyElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEMorphologyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEMorphologyElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEMorphologyElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEMorphologyElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEMorphologyElement[JC] def hasAttribute(name: String): Boolean
 SVGFEMorphologyElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEMorphologyElement[JC] def hasAttributes(): Boolean
@@ -18425,7 +18425,7 @@ SVGFEOffsetElement[JC] def baseURI: String
 SVGFEOffsetElement[JC] def before(nodes: Node | String*): Unit
 SVGFEOffsetElement[JC] def childElementCount: Int
 SVGFEOffsetElement[JC] def childNodes: NodeList[Node]
-SVGFEOffsetElement[JC] def children: HTMLCollection
+SVGFEOffsetElement[JC] def children: HTMLCollection[Element]
 SVGFEOffsetElement[JC] var classList: DOMTokenList
 SVGFEOffsetElement[JC] var className: SVGAnimatedString
 SVGFEOffsetElement[JC] def clientHeight: Int
@@ -18446,9 +18446,9 @@ SVGFEOffsetElement[JC] def getAttributeNode(name: String): Attr
 SVGFEOffsetElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEOffsetElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEOffsetElement[JC] def getClientRects(): DOMRectList
-SVGFEOffsetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEOffsetElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEOffsetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEOffsetElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEOffsetElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEOffsetElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEOffsetElement[JC] def hasAttribute(name: String): Boolean
 SVGFEOffsetElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEOffsetElement[JC] def hasAttributes(): Boolean
@@ -18544,7 +18544,7 @@ SVGFEPointLightElement[JC] def baseURI: String
 SVGFEPointLightElement[JC] def before(nodes: Node | String*): Unit
 SVGFEPointLightElement[JC] def childElementCount: Int
 SVGFEPointLightElement[JC] def childNodes: NodeList[Node]
-SVGFEPointLightElement[JC] def children: HTMLCollection
+SVGFEPointLightElement[JC] def children: HTMLCollection[Element]
 SVGFEPointLightElement[JC] var classList: DOMTokenList
 SVGFEPointLightElement[JC] def clientHeight: Int
 SVGFEPointLightElement[JC] def clientLeft: Int
@@ -18562,9 +18562,9 @@ SVGFEPointLightElement[JC] def getAttributeNode(name: String): Attr
 SVGFEPointLightElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFEPointLightElement[JC] def getBoundingClientRect(): DOMRect
 SVGFEPointLightElement[JC] def getClientRects(): DOMRectList
-SVGFEPointLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFEPointLightElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFEPointLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFEPointLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFEPointLightElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFEPointLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFEPointLightElement[JC] def hasAttribute(name: String): Boolean
 SVGFEPointLightElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFEPointLightElement[JC] def hasAttributes(): Boolean
@@ -18656,7 +18656,7 @@ SVGFESpecularLightingElement[JC] def baseURI: String
 SVGFESpecularLightingElement[JC] def before(nodes: Node | String*): Unit
 SVGFESpecularLightingElement[JC] def childElementCount: Int
 SVGFESpecularLightingElement[JC] def childNodes: NodeList[Node]
-SVGFESpecularLightingElement[JC] def children: HTMLCollection
+SVGFESpecularLightingElement[JC] def children: HTMLCollection[Element]
 SVGFESpecularLightingElement[JC] var classList: DOMTokenList
 SVGFESpecularLightingElement[JC] var className: SVGAnimatedString
 SVGFESpecularLightingElement[JC] def clientHeight: Int
@@ -18675,9 +18675,9 @@ SVGFESpecularLightingElement[JC] def getAttributeNode(name: String): Attr
 SVGFESpecularLightingElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFESpecularLightingElement[JC] def getBoundingClientRect(): DOMRect
 SVGFESpecularLightingElement[JC] def getClientRects(): DOMRectList
-SVGFESpecularLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFESpecularLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFESpecularLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFESpecularLightingElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFESpecularLightingElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFESpecularLightingElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFESpecularLightingElement[JC] def hasAttribute(name: String): Boolean
 SVGFESpecularLightingElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFESpecularLightingElement[JC] def hasAttributes(): Boolean
@@ -18778,7 +18778,7 @@ SVGFESpotLightElement[JC] def baseURI: String
 SVGFESpotLightElement[JC] def before(nodes: Node | String*): Unit
 SVGFESpotLightElement[JC] def childElementCount: Int
 SVGFESpotLightElement[JC] def childNodes: NodeList[Node]
-SVGFESpotLightElement[JC] def children: HTMLCollection
+SVGFESpotLightElement[JC] def children: HTMLCollection[Element]
 SVGFESpotLightElement[JC] var classList: DOMTokenList
 SVGFESpotLightElement[JC] def clientHeight: Int
 SVGFESpotLightElement[JC] def clientLeft: Int
@@ -18796,9 +18796,9 @@ SVGFESpotLightElement[JC] def getAttributeNode(name: String): Attr
 SVGFESpotLightElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFESpotLightElement[JC] def getBoundingClientRect(): DOMRect
 SVGFESpotLightElement[JC] def getClientRects(): DOMRectList
-SVGFESpotLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFESpotLightElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFESpotLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFESpotLightElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFESpotLightElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFESpotLightElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFESpotLightElement[JC] def hasAttribute(name: String): Boolean
 SVGFESpotLightElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFESpotLightElement[JC] def hasAttributes(): Boolean
@@ -18895,7 +18895,7 @@ SVGFETileElement[JC] def baseURI: String
 SVGFETileElement[JC] def before(nodes: Node | String*): Unit
 SVGFETileElement[JC] def childElementCount: Int
 SVGFETileElement[JC] def childNodes: NodeList[Node]
-SVGFETileElement[JC] def children: HTMLCollection
+SVGFETileElement[JC] def children: HTMLCollection[Element]
 SVGFETileElement[JC] var classList: DOMTokenList
 SVGFETileElement[JC] var className: SVGAnimatedString
 SVGFETileElement[JC] def clientHeight: Int
@@ -18914,9 +18914,9 @@ SVGFETileElement[JC] def getAttributeNode(name: String): Attr
 SVGFETileElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFETileElement[JC] def getBoundingClientRect(): DOMRect
 SVGFETileElement[JC] def getClientRects(): DOMRectList
-SVGFETileElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFETileElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFETileElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFETileElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFETileElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFETileElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFETileElement[JC] def hasAttribute(name: String): Boolean
 SVGFETileElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFETileElement[JC] def hasAttributes(): Boolean
@@ -19014,7 +19014,7 @@ SVGFETurbulenceElement[JC] def baseURI: String
 SVGFETurbulenceElement[JC] def before(nodes: Node | String*): Unit
 SVGFETurbulenceElement[JC] def childElementCount: Int
 SVGFETurbulenceElement[JC] def childNodes: NodeList[Node]
-SVGFETurbulenceElement[JC] def children: HTMLCollection
+SVGFETurbulenceElement[JC] def children: HTMLCollection[Element]
 SVGFETurbulenceElement[JC] var classList: DOMTokenList
 SVGFETurbulenceElement[JC] var className: SVGAnimatedString
 SVGFETurbulenceElement[JC] def clientHeight: Int
@@ -19033,9 +19033,9 @@ SVGFETurbulenceElement[JC] def getAttributeNode(name: String): Attr
 SVGFETurbulenceElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFETurbulenceElement[JC] def getBoundingClientRect(): DOMRect
 SVGFETurbulenceElement[JC] def getClientRects(): DOMRectList
-SVGFETurbulenceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFETurbulenceElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFETurbulenceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFETurbulenceElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFETurbulenceElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFETurbulenceElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFETurbulenceElement[JC] def hasAttribute(name: String): Boolean
 SVGFETurbulenceElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFETurbulenceElement[JC] def hasAttributes(): Boolean
@@ -19143,7 +19143,7 @@ SVGFilterElement[JC] def baseURI: String
 SVGFilterElement[JC] def before(nodes: Node | String*): Unit
 SVGFilterElement[JC] def childElementCount: Int
 SVGFilterElement[JC] def childNodes: NodeList[Node]
-SVGFilterElement[JC] def children: HTMLCollection
+SVGFilterElement[JC] def children: HTMLCollection[Element]
 SVGFilterElement[JC] var classList: DOMTokenList
 SVGFilterElement[JC] var className: SVGAnimatedString
 SVGFilterElement[JC] def clientHeight: Int
@@ -19166,9 +19166,9 @@ SVGFilterElement[JC] def getAttributeNode(name: String): Attr
 SVGFilterElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGFilterElement[JC] def getBoundingClientRect(): DOMRect
 SVGFilterElement[JC] def getClientRects(): DOMRectList
-SVGFilterElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGFilterElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGFilterElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGFilterElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGFilterElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGFilterElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGFilterElement[JC] def hasAttribute(name: String): Boolean
 SVGFilterElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGFilterElement[JC] def hasAttributes(): Boolean
@@ -19276,7 +19276,7 @@ SVGGElement[JC] def baseURI: String
 SVGGElement[JC] def before(nodes: Node | String*): Unit
 SVGGElement[JC] def childElementCount: Int
 SVGGElement[JC] def childNodes: NodeList[Node]
-SVGGElement[JC] def children: HTMLCollection
+SVGGElement[JC] def children: HTMLCollection[Element]
 SVGGElement[JC] var classList: DOMTokenList
 SVGGElement[JC] var className: SVGAnimatedString
 SVGGElement[JC] def clientHeight: Int
@@ -19299,9 +19299,9 @@ SVGGElement[JC] def getBBox(): SVGRect
 SVGGElement[JC] def getBoundingClientRect(): DOMRect
 SVGGElement[JC] def getCTM(): SVGMatrix
 SVGGElement[JC] def getClientRects(): DOMRectList
-SVGGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGGElement[JC] def getScreenCTM(): SVGMatrix
 SVGGElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGGElement[JC] def hasAttribute(name: String): Boolean
@@ -19404,7 +19404,7 @@ SVGGradientElement[JC] def baseURI: String
 SVGGradientElement[JC] def before(nodes: Node | String*): Unit
 SVGGradientElement[JC] def childElementCount: Int
 SVGGradientElement[JC] def childNodes: NodeList[Node]
-SVGGradientElement[JC] def children: HTMLCollection
+SVGGradientElement[JC] def children: HTMLCollection[Element]
 SVGGradientElement[JC] var classList: DOMTokenList
 SVGGradientElement[JC] var className: SVGAnimatedString
 SVGGradientElement[JC] def clientHeight: Int
@@ -19424,9 +19424,9 @@ SVGGradientElement[JC] def getAttributeNode(name: String): Attr
 SVGGradientElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGGradientElement[JC] def getBoundingClientRect(): DOMRect
 SVGGradientElement[JC] def getClientRects(): DOMRectList
-SVGGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGGradientElement[JC] def gradientTransform: SVGAnimatedTransformList
 SVGGradientElement[JC] def gradientUnits: SVGAnimatedEnumeration
 SVGGradientElement[JC] def hasAttribute(name: String): Boolean
@@ -19524,7 +19524,7 @@ SVGImageElement[JC] def baseURI: String
 SVGImageElement[JC] def before(nodes: Node | String*): Unit
 SVGImageElement[JC] def childElementCount: Int
 SVGImageElement[JC] def childNodes: NodeList[Node]
-SVGImageElement[JC] def children: HTMLCollection
+SVGImageElement[JC] def children: HTMLCollection[Element]
 SVGImageElement[JC] var classList: DOMTokenList
 SVGImageElement[JC] var className: SVGAnimatedString
 SVGImageElement[JC] def clientHeight: Int
@@ -19547,9 +19547,9 @@ SVGImageElement[JC] def getBBox(): SVGRect
 SVGImageElement[JC] def getBoundingClientRect(): DOMRect
 SVGImageElement[JC] def getCTM(): SVGMatrix
 SVGImageElement[JC] def getClientRects(): DOMRectList
-SVGImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGImageElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGImageElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGImageElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGImageElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGImageElement[JC] def getScreenCTM(): SVGMatrix
 SVGImageElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGImageElement[JC] def hasAttribute(name: String): Boolean
@@ -19682,7 +19682,7 @@ SVGLineElement[JC] def baseURI: String
 SVGLineElement[JC] def before(nodes: Node | String*): Unit
 SVGLineElement[JC] def childElementCount: Int
 SVGLineElement[JC] def childNodes: NodeList[Node]
-SVGLineElement[JC] def children: HTMLCollection
+SVGLineElement[JC] def children: HTMLCollection[Element]
 SVGLineElement[JC] var classList: DOMTokenList
 SVGLineElement[JC] var className: SVGAnimatedString
 SVGLineElement[JC] def clientHeight: Int
@@ -19705,9 +19705,9 @@ SVGLineElement[JC] def getBBox(): SVGRect
 SVGLineElement[JC] def getBoundingClientRect(): DOMRect
 SVGLineElement[JC] def getCTM(): SVGMatrix
 SVGLineElement[JC] def getClientRects(): DOMRectList
-SVGLineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGLineElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGLineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGLineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGLineElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGLineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGLineElement[JC] def getScreenCTM(): SVGMatrix
 SVGLineElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGLineElement[JC] def hasAttribute(name: String): Boolean
@@ -19814,7 +19814,7 @@ SVGLinearGradientElement[JC] def baseURI: String
 SVGLinearGradientElement[JC] def before(nodes: Node | String*): Unit
 SVGLinearGradientElement[JC] def childElementCount: Int
 SVGLinearGradientElement[JC] def childNodes: NodeList[Node]
-SVGLinearGradientElement[JC] def children: HTMLCollection
+SVGLinearGradientElement[JC] def children: HTMLCollection[Element]
 SVGLinearGradientElement[JC] var classList: DOMTokenList
 SVGLinearGradientElement[JC] var className: SVGAnimatedString
 SVGLinearGradientElement[JC] def clientHeight: Int
@@ -19834,9 +19834,9 @@ SVGLinearGradientElement[JC] def getAttributeNode(name: String): Attr
 SVGLinearGradientElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGLinearGradientElement[JC] def getBoundingClientRect(): DOMRect
 SVGLinearGradientElement[JC] def getClientRects(): DOMRectList
-SVGLinearGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGLinearGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGLinearGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGLinearGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGLinearGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGLinearGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGLinearGradientElement[JC] def gradientTransform: SVGAnimatedTransformList
 SVGLinearGradientElement[JC] def gradientUnits: SVGAnimatedEnumeration
 SVGLinearGradientElement[JC] def hasAttribute(name: String): Boolean
@@ -19940,7 +19940,7 @@ SVGMarkerElement[JC] def baseURI: String
 SVGMarkerElement[JC] def before(nodes: Node | String*): Unit
 SVGMarkerElement[JC] def childElementCount: Int
 SVGMarkerElement[JC] def childNodes: NodeList[Node]
-SVGMarkerElement[JC] def children: HTMLCollection
+SVGMarkerElement[JC] def children: HTMLCollection[Element]
 SVGMarkerElement[JC] var classList: DOMTokenList
 SVGMarkerElement[JC] var className: SVGAnimatedString
 SVGMarkerElement[JC] def clientHeight: Int
@@ -19960,9 +19960,9 @@ SVGMarkerElement[JC] def getAttributeNode(name: String): Attr
 SVGMarkerElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGMarkerElement[JC] def getBoundingClientRect(): DOMRect
 SVGMarkerElement[JC] def getClientRects(): DOMRectList
-SVGMarkerElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGMarkerElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGMarkerElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGMarkerElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGMarkerElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGMarkerElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGMarkerElement[JC] def hasAttribute(name: String): Boolean
 SVGMarkerElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGMarkerElement[JC] def hasAttributes(): Boolean
@@ -20074,7 +20074,7 @@ SVGMaskElement[JC] def baseURI: String
 SVGMaskElement[JC] def before(nodes: Node | String*): Unit
 SVGMaskElement[JC] def childElementCount: Int
 SVGMaskElement[JC] def childNodes: NodeList[Node]
-SVGMaskElement[JC] def children: HTMLCollection
+SVGMaskElement[JC] def children: HTMLCollection[Element]
 SVGMaskElement[JC] var classList: DOMTokenList
 SVGMaskElement[JC] var className: SVGAnimatedString
 SVGMaskElement[JC] def clientHeight: Int
@@ -20094,9 +20094,9 @@ SVGMaskElement[JC] def getAttributeNode(name: String): Attr
 SVGMaskElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGMaskElement[JC] def getBoundingClientRect(): DOMRect
 SVGMaskElement[JC] def getClientRects(): DOMRectList
-SVGMaskElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGMaskElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGMaskElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGMaskElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGMaskElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGMaskElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGMaskElement[JC] def hasAttribute(name: String): Boolean
 SVGMaskElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGMaskElement[JC] def hasAttributes(): Boolean
@@ -20215,7 +20215,7 @@ SVGMetadataElement[JC] def baseURI: String
 SVGMetadataElement[JC] def before(nodes: Node | String*): Unit
 SVGMetadataElement[JC] def childElementCount: Int
 SVGMetadataElement[JC] def childNodes: NodeList[Node]
-SVGMetadataElement[JC] def children: HTMLCollection
+SVGMetadataElement[JC] def children: HTMLCollection[Element]
 SVGMetadataElement[JC] var classList: DOMTokenList
 SVGMetadataElement[JC] def clientHeight: Int
 SVGMetadataElement[JC] def clientLeft: Int
@@ -20233,9 +20233,9 @@ SVGMetadataElement[JC] def getAttributeNode(name: String): Attr
 SVGMetadataElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGMetadataElement[JC] def getBoundingClientRect(): DOMRect
 SVGMetadataElement[JC] def getClientRects(): DOMRectList
-SVGMetadataElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGMetadataElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGMetadataElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGMetadataElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGMetadataElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGMetadataElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGMetadataElement[JC] def hasAttribute(name: String): Boolean
 SVGMetadataElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGMetadataElement[JC] def hasAttributes(): Boolean
@@ -20333,7 +20333,7 @@ SVGPathElement[JC] def baseURI: String
 SVGPathElement[JC] def before(nodes: Node | String*): Unit
 SVGPathElement[JC] def childElementCount: Int
 SVGPathElement[JC] def childNodes: NodeList[Node]
-SVGPathElement[JC] def children: HTMLCollection
+SVGPathElement[JC] def children: HTMLCollection[Element]
 SVGPathElement[JC] var classList: DOMTokenList
 SVGPathElement[JC] var className: SVGAnimatedString
 SVGPathElement[JC] def clientHeight: Int
@@ -20375,9 +20375,9 @@ SVGPathElement[JC] def getBBox(): SVGRect
 SVGPathElement[JC] def getBoundingClientRect(): DOMRect
 SVGPathElement[JC] def getCTM(): SVGMatrix
 SVGPathElement[JC] def getClientRects(): DOMRectList
-SVGPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPathElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPathElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPathElement[JC] def getPathSegAtLength(distance: Double): Int
 SVGPathElement[JC] def getPointAtLength(distance: Double): SVGPoint
 SVGPathElement[JC] def getScreenCTM(): SVGMatrix
@@ -20610,7 +20610,7 @@ SVGPatternElement[JC] def baseURI: String
 SVGPatternElement[JC] def before(nodes: Node | String*): Unit
 SVGPatternElement[JC] def childElementCount: Int
 SVGPatternElement[JC] def childNodes: NodeList[Node]
-SVGPatternElement[JC] def children: HTMLCollection
+SVGPatternElement[JC] def children: HTMLCollection[Element]
 SVGPatternElement[JC] var classList: DOMTokenList
 SVGPatternElement[JC] var className: SVGAnimatedString
 SVGPatternElement[JC] def clientHeight: Int
@@ -20630,9 +20630,9 @@ SVGPatternElement[JC] def getAttributeNode(name: String): Attr
 SVGPatternElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGPatternElement[JC] def getBoundingClientRect(): DOMRect
 SVGPatternElement[JC] def getClientRects(): DOMRectList
-SVGPatternElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPatternElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPatternElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPatternElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPatternElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPatternElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPatternElement[JC] def hasAttribute(name: String): Boolean
 SVGPatternElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGPatternElement[JC] def hasAttributes(): Boolean
@@ -20750,7 +20750,7 @@ SVGPolygonElement[JC] def baseURI: String
 SVGPolygonElement[JC] def before(nodes: Node | String*): Unit
 SVGPolygonElement[JC] def childElementCount: Int
 SVGPolygonElement[JC] def childNodes: NodeList[Node]
-SVGPolygonElement[JC] def children: HTMLCollection
+SVGPolygonElement[JC] def children: HTMLCollection[Element]
 SVGPolygonElement[JC] var classList: DOMTokenList
 SVGPolygonElement[JC] var className: SVGAnimatedString
 SVGPolygonElement[JC] def clientHeight: Int
@@ -20773,9 +20773,9 @@ SVGPolygonElement[JC] def getBBox(): SVGRect
 SVGPolygonElement[JC] def getBoundingClientRect(): DOMRect
 SVGPolygonElement[JC] def getCTM(): SVGMatrix
 SVGPolygonElement[JC] def getClientRects(): DOMRectList
-SVGPolygonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPolygonElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPolygonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPolygonElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPolygonElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPolygonElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPolygonElement[JC] def getScreenCTM(): SVGMatrix
 SVGPolygonElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGPolygonElement[JC] def hasAttribute(name: String): Boolean
@@ -20877,7 +20877,7 @@ SVGPolylineElement[JC] def baseURI: String
 SVGPolylineElement[JC] def before(nodes: Node | String*): Unit
 SVGPolylineElement[JC] def childElementCount: Int
 SVGPolylineElement[JC] def childNodes: NodeList[Node]
-SVGPolylineElement[JC] def children: HTMLCollection
+SVGPolylineElement[JC] def children: HTMLCollection[Element]
 SVGPolylineElement[JC] var classList: DOMTokenList
 SVGPolylineElement[JC] var className: SVGAnimatedString
 SVGPolylineElement[JC] def clientHeight: Int
@@ -20900,9 +20900,9 @@ SVGPolylineElement[JC] def getBBox(): SVGRect
 SVGPolylineElement[JC] def getBoundingClientRect(): DOMRect
 SVGPolylineElement[JC] def getCTM(): SVGMatrix
 SVGPolylineElement[JC] def getClientRects(): DOMRectList
-SVGPolylineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGPolylineElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGPolylineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGPolylineElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGPolylineElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGPolylineElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGPolylineElement[JC] def getScreenCTM(): SVGMatrix
 SVGPolylineElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGPolylineElement[JC] def hasAttribute(name: String): Boolean
@@ -21022,7 +21022,7 @@ SVGRadialGradientElement[JC] def baseURI: String
 SVGRadialGradientElement[JC] def before(nodes: Node | String*): Unit
 SVGRadialGradientElement[JC] def childElementCount: Int
 SVGRadialGradientElement[JC] def childNodes: NodeList[Node]
-SVGRadialGradientElement[JC] def children: HTMLCollection
+SVGRadialGradientElement[JC] def children: HTMLCollection[Element]
 SVGRadialGradientElement[JC] var classList: DOMTokenList
 SVGRadialGradientElement[JC] var className: SVGAnimatedString
 SVGRadialGradientElement[JC] def clientHeight: Int
@@ -21046,9 +21046,9 @@ SVGRadialGradientElement[JC] def getAttributeNode(name: String): Attr
 SVGRadialGradientElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGRadialGradientElement[JC] def getBoundingClientRect(): DOMRect
 SVGRadialGradientElement[JC] def getClientRects(): DOMRectList
-SVGRadialGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGRadialGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGRadialGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGRadialGradientElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGRadialGradientElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGRadialGradientElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGRadialGradientElement[JC] def gradientTransform: SVGAnimatedTransformList
 SVGRadialGradientElement[JC] def gradientUnits: SVGAnimatedEnumeration
 SVGRadialGradientElement[JC] def hasAttribute(name: String): Boolean
@@ -21147,7 +21147,7 @@ SVGRectElement[JC] def baseURI: String
 SVGRectElement[JC] def before(nodes: Node | String*): Unit
 SVGRectElement[JC] def childElementCount: Int
 SVGRectElement[JC] def childNodes: NodeList[Node]
-SVGRectElement[JC] def children: HTMLCollection
+SVGRectElement[JC] def children: HTMLCollection[Element]
 SVGRectElement[JC] var classList: DOMTokenList
 SVGRectElement[JC] var className: SVGAnimatedString
 SVGRectElement[JC] def clientHeight: Int
@@ -21170,9 +21170,9 @@ SVGRectElement[JC] def getBBox(): SVGRect
 SVGRectElement[JC] def getBoundingClientRect(): DOMRect
 SVGRectElement[JC] def getCTM(): SVGMatrix
 SVGRectElement[JC] def getClientRects(): DOMRectList
-SVGRectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGRectElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGRectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGRectElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGRectElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGRectElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGRectElement[JC] def getScreenCTM(): SVGMatrix
 SVGRectElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGRectElement[JC] def hasAttribute(name: String): Boolean
@@ -21280,7 +21280,7 @@ SVGSVGElement[JC] def checkEnclosure(element: SVGElement, rect: SVGRect): Boolea
 SVGSVGElement[JC] def checkIntersection(element: SVGElement, rect: SVGRect): Boolean
 SVGSVGElement[JC] def childElementCount: Int
 SVGSVGElement[JC] def childNodes: NodeList[Node]
-SVGSVGElement[JC] def children: HTMLCollection
+SVGSVGElement[JC] def children: HTMLCollection[Element]
 SVGSVGElement[JC] var classList: DOMTokenList
 SVGSVGElement[JC] var className: SVGAnimatedString
 SVGSVGElement[JC] def clientHeight: Int
@@ -21321,9 +21321,9 @@ SVGSVGElement[JC] def getClientRects(): DOMRectList
 SVGSVGElement[JC] def getComputedStyle(elt: Element, pseudoElt: String?): CSSStyleDeclaration
 SVGSVGElement[JC] def getCurrentTime(): Int
 SVGSVGElement[JC] def getElementById(elementId: String): Element
-SVGSVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGSVGElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGSVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGSVGElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGSVGElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGSVGElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGSVGElement[JC] def getEnclosureList(rect: SVGRect, referenceElement: SVGElement): NodeList[Node]
 SVGSVGElement[JC] def getIntersectionList(rect: SVGRect, referenceElement: SVGElement): NodeList[Node]
 SVGSVGElement[JC] def getScreenCTM(): SVGMatrix
@@ -21448,7 +21448,7 @@ SVGScriptElement[JC] def baseURI: String
 SVGScriptElement[JC] def before(nodes: Node | String*): Unit
 SVGScriptElement[JC] def childElementCount: Int
 SVGScriptElement[JC] def childNodes: NodeList[Node]
-SVGScriptElement[JC] def children: HTMLCollection
+SVGScriptElement[JC] def children: HTMLCollection[Element]
 SVGScriptElement[JC] var classList: DOMTokenList
 SVGScriptElement[JC] def clientHeight: Int
 SVGScriptElement[JC] def clientLeft: Int
@@ -21467,9 +21467,9 @@ SVGScriptElement[JC] def getAttributeNode(name: String): Attr
 SVGScriptElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGScriptElement[JC] def getBoundingClientRect(): DOMRect
 SVGScriptElement[JC] def getClientRects(): DOMRectList
-SVGScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGScriptElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGScriptElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGScriptElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGScriptElement[JC] def hasAttribute(name: String): Boolean
 SVGScriptElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGScriptElement[JC] def hasAttributes(): Boolean
@@ -21560,7 +21560,7 @@ SVGStopElement[JC] def baseURI: String
 SVGStopElement[JC] def before(nodes: Node | String*): Unit
 SVGStopElement[JC] def childElementCount: Int
 SVGStopElement[JC] def childNodes: NodeList[Node]
-SVGStopElement[JC] def children: HTMLCollection
+SVGStopElement[JC] def children: HTMLCollection[Element]
 SVGStopElement[JC] var classList: DOMTokenList
 SVGStopElement[JC] var className: SVGAnimatedString
 SVGStopElement[JC] def clientHeight: Int
@@ -21579,9 +21579,9 @@ SVGStopElement[JC] def getAttributeNode(name: String): Attr
 SVGStopElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGStopElement[JC] def getBoundingClientRect(): DOMRect
 SVGStopElement[JC] def getClientRects(): DOMRectList
-SVGStopElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGStopElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGStopElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGStopElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGStopElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGStopElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGStopElement[JC] def hasAttribute(name: String): Boolean
 SVGStopElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGStopElement[JC] def hasAttributes(): Boolean
@@ -21682,7 +21682,7 @@ SVGStyleElement[JC] def baseURI: String
 SVGStyleElement[JC] def before(nodes: Node | String*): Unit
 SVGStyleElement[JC] def childElementCount: Int
 SVGStyleElement[JC] def childNodes: NodeList[Node]
-SVGStyleElement[JC] def children: HTMLCollection
+SVGStyleElement[JC] def children: HTMLCollection[Element]
 SVGStyleElement[JC] var classList: DOMTokenList
 SVGStyleElement[JC] def clientHeight: Int
 SVGStyleElement[JC] def clientLeft: Int
@@ -21700,9 +21700,9 @@ SVGStyleElement[JC] def getAttributeNode(name: String): Attr
 SVGStyleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGStyleElement[JC] def getBoundingClientRect(): DOMRect
 SVGStyleElement[JC] def getClientRects(): DOMRectList
-SVGStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGStyleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGStyleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGStyleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGStyleElement[JC] def hasAttribute(name: String): Boolean
 SVGStyleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGStyleElement[JC] def hasAttributes(): Boolean
@@ -21796,7 +21796,7 @@ SVGSwitchElement[JC] def baseURI: String
 SVGSwitchElement[JC] def before(nodes: Node | String*): Unit
 SVGSwitchElement[JC] def childElementCount: Int
 SVGSwitchElement[JC] def childNodes: NodeList[Node]
-SVGSwitchElement[JC] def children: HTMLCollection
+SVGSwitchElement[JC] def children: HTMLCollection[Element]
 SVGSwitchElement[JC] var classList: DOMTokenList
 SVGSwitchElement[JC] var className: SVGAnimatedString
 SVGSwitchElement[JC] def clientHeight: Int
@@ -21819,9 +21819,9 @@ SVGSwitchElement[JC] def getBBox(): SVGRect
 SVGSwitchElement[JC] def getBoundingClientRect(): DOMRect
 SVGSwitchElement[JC] def getCTM(): SVGMatrix
 SVGSwitchElement[JC] def getClientRects(): DOMRectList
-SVGSwitchElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGSwitchElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGSwitchElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGSwitchElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGSwitchElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGSwitchElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGSwitchElement[JC] def getScreenCTM(): SVGMatrix
 SVGSwitchElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGSwitchElement[JC] def hasAttribute(name: String): Boolean
@@ -21921,7 +21921,7 @@ SVGSymbolElement[JC] def baseURI: String
 SVGSymbolElement[JC] def before(nodes: Node | String*): Unit
 SVGSymbolElement[JC] def childElementCount: Int
 SVGSymbolElement[JC] def childNodes: NodeList[Node]
-SVGSymbolElement[JC] def children: HTMLCollection
+SVGSymbolElement[JC] def children: HTMLCollection[Element]
 SVGSymbolElement[JC] var classList: DOMTokenList
 SVGSymbolElement[JC] var className: SVGAnimatedString
 SVGSymbolElement[JC] def clientHeight: Int
@@ -21941,9 +21941,9 @@ SVGSymbolElement[JC] def getAttributeNode(name: String): Attr
 SVGSymbolElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGSymbolElement[JC] def getBoundingClientRect(): DOMRect
 SVGSymbolElement[JC] def getClientRects(): DOMRectList
-SVGSymbolElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGSymbolElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGSymbolElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGSymbolElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGSymbolElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGSymbolElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGSymbolElement[JC] def hasAttribute(name: String): Boolean
 SVGSymbolElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGSymbolElement[JC] def hasAttributes(): Boolean
@@ -22037,7 +22037,7 @@ SVGTSpanElement[JC] def baseURI: String
 SVGTSpanElement[JC] def before(nodes: Node | String*): Unit
 SVGTSpanElement[JC] def childElementCount: Int
 SVGTSpanElement[JC] def childNodes: NodeList[Node]
-SVGTSpanElement[JC] def children: HTMLCollection
+SVGTSpanElement[JC] def children: HTMLCollection[Element]
 SVGTSpanElement[JC] var classList: DOMTokenList
 SVGTSpanElement[JC] var className: SVGAnimatedString
 SVGTSpanElement[JC] def clientHeight: Int
@@ -22061,9 +22061,9 @@ SVGTSpanElement[JC] def getBoundingClientRect(): DOMRect
 SVGTSpanElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTSpanElement[JC] def getClientRects(): DOMRectList
 SVGTSpanElement[JC] def getComputedTextLength(): Double
-SVGTSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTSpanElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTSpanElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTSpanElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTSpanElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTSpanElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTSpanElement[JC] def getNumberOfChars(): Int
@@ -22175,7 +22175,7 @@ SVGTextContentElement[JC] def baseURI: String
 SVGTextContentElement[JC] def before(nodes: Node | String*): Unit
 SVGTextContentElement[JC] def childElementCount: Int
 SVGTextContentElement[JC] def childNodes: NodeList[Node]
-SVGTextContentElement[JC] def children: HTMLCollection
+SVGTextContentElement[JC] def children: HTMLCollection[Element]
 SVGTextContentElement[JC] var classList: DOMTokenList
 SVGTextContentElement[JC] var className: SVGAnimatedString
 SVGTextContentElement[JC] def clientHeight: Int
@@ -22197,9 +22197,9 @@ SVGTextContentElement[JC] def getBoundingClientRect(): DOMRect
 SVGTextContentElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextContentElement[JC] def getClientRects(): DOMRectList
 SVGTextContentElement[JC] def getComputedTextLength(): Double
-SVGTextContentElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextContentElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextContentElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextContentElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextContentElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextContentElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextContentElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextContentElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextContentElement[JC] def getNumberOfChars(): Int
@@ -22307,7 +22307,7 @@ SVGTextElement[JC] def baseURI: String
 SVGTextElement[JC] def before(nodes: Node | String*): Unit
 SVGTextElement[JC] def childElementCount: Int
 SVGTextElement[JC] def childNodes: NodeList[Node]
-SVGTextElement[JC] def children: HTMLCollection
+SVGTextElement[JC] def children: HTMLCollection[Element]
 SVGTextElement[JC] var classList: DOMTokenList
 SVGTextElement[JC] var className: SVGAnimatedString
 SVGTextElement[JC] def clientHeight: Int
@@ -22334,9 +22334,9 @@ SVGTextElement[JC] def getCTM(): SVGMatrix
 SVGTextElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextElement[JC] def getClientRects(): DOMRectList
 SVGTextElement[JC] def getComputedTextLength(): Double
-SVGTextElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextElement[JC] def getNumberOfChars(): Int
@@ -22448,7 +22448,7 @@ SVGTextPathElement[JC] def baseURI: String
 SVGTextPathElement[JC] def before(nodes: Node | String*): Unit
 SVGTextPathElement[JC] def childElementCount: Int
 SVGTextPathElement[JC] def childNodes: NodeList[Node]
-SVGTextPathElement[JC] def children: HTMLCollection
+SVGTextPathElement[JC] def children: HTMLCollection[Element]
 SVGTextPathElement[JC] var classList: DOMTokenList
 SVGTextPathElement[JC] var className: SVGAnimatedString
 SVGTextPathElement[JC] def clientHeight: Int
@@ -22470,9 +22470,9 @@ SVGTextPathElement[JC] def getBoundingClientRect(): DOMRect
 SVGTextPathElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextPathElement[JC] def getClientRects(): DOMRectList
 SVGTextPathElement[JC] def getComputedTextLength(): Double
-SVGTextPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextPathElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextPathElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextPathElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextPathElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextPathElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextPathElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextPathElement[JC] def getNumberOfChars(): Int
@@ -22587,7 +22587,7 @@ SVGTextPositioningElement[JC] def baseURI: String
 SVGTextPositioningElement[JC] def before(nodes: Node | String*): Unit
 SVGTextPositioningElement[JC] def childElementCount: Int
 SVGTextPositioningElement[JC] def childNodes: NodeList[Node]
-SVGTextPositioningElement[JC] def children: HTMLCollection
+SVGTextPositioningElement[JC] def children: HTMLCollection[Element]
 SVGTextPositioningElement[JC] var classList: DOMTokenList
 SVGTextPositioningElement[JC] var className: SVGAnimatedString
 SVGTextPositioningElement[JC] def clientHeight: Int
@@ -22611,9 +22611,9 @@ SVGTextPositioningElement[JC] def getBoundingClientRect(): DOMRect
 SVGTextPositioningElement[JC] def getCharNumAtPosition(point: SVGPoint): Int
 SVGTextPositioningElement[JC] def getClientRects(): DOMRectList
 SVGTextPositioningElement[JC] def getComputedTextLength(): Double
-SVGTextPositioningElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTextPositioningElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTextPositioningElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTextPositioningElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTextPositioningElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTextPositioningElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTextPositioningElement[JC] def getEndPositionOfChar(charnum: Int): SVGPoint
 SVGTextPositioningElement[JC] def getExtentOfChar(charnum: Int): SVGRect
 SVGTextPositioningElement[JC] def getNumberOfChars(): Int
@@ -22721,7 +22721,7 @@ SVGTitleElement[JC] def baseURI: String
 SVGTitleElement[JC] def before(nodes: Node | String*): Unit
 SVGTitleElement[JC] def childElementCount: Int
 SVGTitleElement[JC] def childNodes: NodeList[Node]
-SVGTitleElement[JC] def children: HTMLCollection
+SVGTitleElement[JC] def children: HTMLCollection[Element]
 SVGTitleElement[JC] var classList: DOMTokenList
 SVGTitleElement[JC] var className: SVGAnimatedString
 SVGTitleElement[JC] def clientHeight: Int
@@ -22740,9 +22740,9 @@ SVGTitleElement[JC] def getAttributeNode(name: String): Attr
 SVGTitleElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGTitleElement[JC] def getBoundingClientRect(): DOMRect
 SVGTitleElement[JC] def getClientRects(): DOMRectList
-SVGTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGTitleElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGTitleElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGTitleElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGTitleElement[JC] def hasAttribute(name: String): Boolean
 SVGTitleElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGTitleElement[JC] def hasAttributes(): Boolean
@@ -22875,7 +22875,7 @@ SVGUseElement[JC] def baseURI: String
 SVGUseElement[JC] def before(nodes: Node | String*): Unit
 SVGUseElement[JC] def childElementCount: Int
 SVGUseElement[JC] def childNodes: NodeList[Node]
-SVGUseElement[JC] def children: HTMLCollection
+SVGUseElement[JC] def children: HTMLCollection[Element]
 SVGUseElement[JC] var classList: DOMTokenList
 SVGUseElement[JC] var className: SVGAnimatedString
 SVGUseElement[JC] def clientHeight: Int
@@ -22898,9 +22898,9 @@ SVGUseElement[JC] def getBBox(): SVGRect
 SVGUseElement[JC] def getBoundingClientRect(): DOMRect
 SVGUseElement[JC] def getCTM(): SVGMatrix
 SVGUseElement[JC] def getClientRects(): DOMRectList
-SVGUseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGUseElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGUseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGUseElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGUseElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGUseElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGUseElement[JC] def getScreenCTM(): SVGMatrix
 SVGUseElement[JC] def getTransformToElement(element: SVGElement): SVGMatrix
 SVGUseElement[JC] def hasAttribute(name: String): Boolean
@@ -23006,7 +23006,7 @@ SVGViewElement[JC] def baseURI: String
 SVGViewElement[JC] def before(nodes: Node | String*): Unit
 SVGViewElement[JC] def childElementCount: Int
 SVGViewElement[JC] def childNodes: NodeList[Node]
-SVGViewElement[JC] def children: HTMLCollection
+SVGViewElement[JC] def children: HTMLCollection[Element]
 SVGViewElement[JC] var classList: DOMTokenList
 SVGViewElement[JC] def clientHeight: Int
 SVGViewElement[JC] def clientLeft: Int
@@ -23025,9 +23025,9 @@ SVGViewElement[JC] def getAttributeNode(name: String): Attr
 SVGViewElement[JC] def getAttributeNodeNS(namespaceURI: String, localName: String): Attr
 SVGViewElement[JC] def getBoundingClientRect(): DOMRect
 SVGViewElement[JC] def getClientRects(): DOMRectList
-SVGViewElement[JC] def getElementsByClassName(classNames: String): HTMLCollection
-SVGViewElement[JC] def getElementsByTagName(name: String): HTMLCollection
-SVGViewElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection
+SVGViewElement[JC] def getElementsByClassName(classNames: String): HTMLCollection[Element]
+SVGViewElement[JC] def getElementsByTagName(name: String): HTMLCollection[Element]
+SVGViewElement[JC] def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element]
 SVGViewElement[JC] def hasAttribute(name: String): Boolean
 SVGViewElement[JC] def hasAttributeNS(namespaceURI: String, localName: String): Boolean
 SVGViewElement[JC] def hasAttributes(): Boolean
@@ -25786,7 +25786,7 @@ html[SO] type Base = HTMLBaseElement
 html[SO] type Body = HTMLBodyElement
 html[SO] type Button = HTMLButtonElement
 html[SO] type Canvas = HTMLCanvasElement
-html[SO] type Collection = HTMLCollection
+html[SO] type Collection[E <: Element] = HTMLCollection[E]
 html[SO] type DList = HTMLDListElement
 html[SO] type DataList = HTMLDataListElement
 html[SO] type Div = HTMLDivElement
@@ -25972,7 +25972,7 @@ raw[SO] type HTMLBaseElement = dom.HTMLBaseElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLBodyElement = dom.HTMLBodyElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLButtonElement = dom.HTMLButtonElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLCanvasElement = dom.HTMLCanvasElement  (@deprecated in 2.0.0)
-raw[SO] type HTMLCollectionElement = dom.HTMLCollection  (@deprecated in 2.0.0)
+raw[SO] type HTMLCollectionElement[E <: dom.Element] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
 raw[SO] type HTMLDListElement = dom.HTMLDListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDataListElement = dom.HTMLDataListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDivElement = dom.HTMLDivElement  (@deprecated in 2.0.0)
diff --git a/src/main/scala/org/scalajs/dom/Document.scala b/src/main/scala/org/scalajs/dom/Document.scala
index 8ffbd22f8..e3fc43f27 100644
--- a/src/main/scala/org/scalajs/dom/Document.scala
+++ b/src/main/scala/org/scalajs/dom/Document.scala
@@ -51,18 +51,18 @@ abstract class Document extends Node with NodeSelector with DocumentEvent with P
     * root node. The returned HTMLCollection is live, meaning that it updates itself automatically to stay in sync with
     * the DOM tree without having to call document.getElementsByTagName again.
     */
-  def getElementsByTagName(name: String): HTMLCollection = js.native
+  def getElementsByTagName(name: String): HTMLCollection[Element] = js.native
 
   /** Returns a list of elements with the given tag name belonging to the given namespace. The complete document is
     * searched, including the root node.
     */
-  def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection = js.native
+  def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element] = js.native
 
   /** Returns a set of elements which have all the given class names. When called on the document object, the complete
     * document is searched, including the root node. You may also call getElementsByClassName on any element; it will
     * return only elements which are descendants of the specified root element with the given class names.
     */
-  def getElementsByClassName(classNames: String): HTMLCollection = js.native
+  def getElementsByClassName(classNames: String): HTMLCollection[Element] = js.native
 
   /** Returns the element from the document whose elementFromPoint method is being called which is the topmost element
     * which lies under the given point.  To get an element, specify the point via coordinates, in CSS pixels, relative
diff --git a/src/main/scala/org/scalajs/dom/Element.scala b/src/main/scala/org/scalajs/dom/Element.scala
index 79c4d68e1..74f73775e 100644
--- a/src/main/scala/org/scalajs/dom/Element.scala
+++ b/src/main/scala/org/scalajs/dom/Element.scala
@@ -167,17 +167,17 @@ abstract class Element extends Node with NodeSelector with ParentNode with NonDo
     * automatically. Consequently, there is no need to call several times element.getElementsByTagName with the same
     * element and arguments.
     */
-  def getElementsByTagName(name: String): HTMLCollection = js.native
+  def getElementsByTagName(name: String): HTMLCollection[Element] = js.native
 
   /** Returns a list of elements with the given tag name belonging to the given namespace. */
-  def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection = js.native
+  def getElementsByTagNameNS(namespaceURI: String, localName: String): HTMLCollection[Element] = js.native
 
   /** Returns an array-like object of all child elements which have all of the given class names. When called on the
     * document object, the complete document is searched, including the root node. You may also call
     * getElementsByClassName() on any element; it will return only elements which are descendants of the specified root
     * element with the given class names.
     */
-  def getElementsByClassName(classNames: String): HTMLCollection = js.native
+  def getElementsByClassName(classNames: String): HTMLCollection[Element] = js.native
 
   /** hasAttributeNS returns a boolean value indicating whether the current element has the specified attribute. */
   def hasAttributeNS(namespaceURI: String, localName: String): Boolean = js.native
diff --git a/src/main/scala/org/scalajs/dom/HTMLCollection.scala b/src/main/scala/org/scalajs/dom/HTMLCollection.scala
index 9f8ff5e05..3c7e496fd 100644
--- a/src/main/scala/org/scalajs/dom/HTMLCollection.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLCollection.scala
@@ -14,12 +14,12 @@ import scala.scalajs.js.annotation._
   */
 @js.native
 @JSGlobal
-abstract class HTMLCollection extends DOMList[Element] {
-  def item(index: Int): Element = js.native
+abstract class HTMLCollection[E <: Element] extends DOMList[E] {
+  def item(index: Int): E = js.native
 
   /** Returns the specific node whose ID or, as a fallback, name matches the string specified by name. Matching by name
     * is only done as a last resort, only in HTML, and only if the referenced element supports the name attribute.
     * Returns null if no node exists by the given name.
     */
-  def namedItem(name: String): Element = js.native
+  def namedItem(name: String): E = js.native
 }
diff --git a/src/main/scala/org/scalajs/dom/HTMLDataListElement.scala b/src/main/scala/org/scalajs/dom/HTMLDataListElement.scala
index b7b92450b..b3c960603 100644
--- a/src/main/scala/org/scalajs/dom/HTMLDataListElement.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLDataListElement.scala
@@ -17,5 +17,5 @@ import scala.scalajs.js.annotation._
 abstract class HTMLDataListElement extends HTMLElement {
 
   /** A collection of the contained option elements. */
-  def options: HTMLCollection = js.native
+  def options: HTMLCollection[Element] = js.native
 }
diff --git a/src/main/scala/org/scalajs/dom/HTMLDocument.scala b/src/main/scala/org/scalajs/dom/HTMLDocument.scala
index 914d5035a..4ccccc5be 100644
--- a/src/main/scala/org/scalajs/dom/HTMLDocument.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLDocument.scala
@@ -68,26 +68,26 @@ abstract class HTMLDocument extends Document {
   def activeElement: Element = js.native
 
   /** Returns a list of the embedded &lt;embed&gt; elements within the current document. */
-  def embeds: HTMLCollection = js.native
+  def embeds: HTMLCollection[Element] = js.native
 
   /** forms returns a collection (an HTMLCollection) of the form elements within the current document. */
-  def forms: HTMLCollection = js.native
+  def forms: HTMLCollection[Element] = js.native
 
   /** The links property returns a collection of all AREA elements and anchor elements in a document with a value for
     * the href attribute.
     */
-  def links: HTMLCollection = js.native
+  def links: HTMLCollection[Element] = js.native
 
   /** anchors returns a list of all of the anchors in the document. */
-  def anchors: HTMLCollection = js.native
+  def anchors: HTMLCollection[Element] = js.native
 
   /** Returns an HTMLCollection object containing one or more HTMLEmbedElements or null which represent the
     * &lt;embed&gt; elements in the current document.
     */
-  def plugins: HTMLCollection = js.native
+  def plugins: HTMLCollection[Element] = js.native
 
   /** document.images returns a collection of the images in the current HTML document. */
-  def images: HTMLCollection = js.native
+  def images: HTMLCollection[Element] = js.native
 
   /** Returns the current value of the current range for a formatting command. */
   def queryCommandValue(commandId: String): String = js.native
diff --git a/src/main/scala/org/scalajs/dom/HTMLFormElement.scala b/src/main/scala/org/scalajs/dom/HTMLFormElement.scala
index 6e9841423..b6e7df48d 100644
--- a/src/main/scala/org/scalajs/dom/HTMLFormElement.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLFormElement.scala
@@ -33,7 +33,7 @@ abstract class HTMLFormElement extends HTMLElement {
   /** elements returns an HTMLFormControlsCollection (HTML 4 HTMLCollection) of all the form controls contained in the
     * FORM element, with the exception of input elements which have a type attribute of image.
     */
-  def elements: HTMLCollection = js.native
+  def elements: HTMLCollection[Element] = js.native
 
   /** action gets/sets the action of the &lt;form&gt; element. */
   var action: String = js.native
diff --git a/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala b/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
index 3eabeaead..1d5fac4cd 100644
--- a/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLOptionsCollection.scala
@@ -15,12 +15,4 @@ import scala.scalajs.js.annotation._
   */
 @js.native
 @JSGlobal
-class HTMLOptionsCollection private[this] () extends HTMLCollection {
-  override def item(index: Int): HTMLOptionElement = js.native
-
-  /** Returns the specific node whose ID or, as a fallback, name matches the string specified by name. Matching by name
-    * is only done as a last resort, only in HTML, and only if the referenced element supports the name attribute.
-    * Returns null if no node exists by the given name.
-    */
-  override def namedItem(name: String): HTMLOptionElement = js.native
-}
+class HTMLOptionsCollection private[this] () extends HTMLCollection[HTMLOptionElement]
diff --git a/src/main/scala/org/scalajs/dom/HTMLTableElement.scala b/src/main/scala/org/scalajs/dom/HTMLTableElement.scala
index 3f9622365..de6719454 100644
--- a/src/main/scala/org/scalajs/dom/HTMLTableElement.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLTableElement.scala
@@ -30,7 +30,7 @@ abstract class HTMLTableElement extends HTMLElement {
     * a &lt;thead&gt; appear first, in tree order, and those members of a &lt;tbody&gt; last, also in tree order. The
     * HTMLCollection is live and is automatically updated when the HTMLTableElement changes.
     */
-  def rows: HTMLCollection = js.native
+  def rows: HTMLCollection[Element] = js.native
 
   /** Is an HTMLTableCaptionElement representing the first &lt;caption&gt; that is a child of the element, or null if
     * none is found. When set, if the object doesn't represent a &lt;caption&gt;, a DOMException with the
@@ -42,7 +42,7 @@ abstract class HTMLTableElement extends HTMLElement {
   /** Returns a live HTMLCollection containing all the &lt;tbody&gt; of the element. The HTMLCollection is live and is
     * automatically updated when the HTMLTableElement changes.
     */
-  def tBodies: HTMLCollection = js.native
+  def tBodies: HTMLCollection[Element] = js.native
 
   /** Is an HTMLTableSectionElement representing the first &lt;thead&gt; that is a child of the element, or null if none
     * is found. When set, if the object doesn't represent a &lt;thead&gt;, a DOMException with the HierarchyRequestError
diff --git a/src/main/scala/org/scalajs/dom/HTMLTableRowElement.scala b/src/main/scala/org/scalajs/dom/HTMLTableRowElement.scala
index b2f1d01af..479f1a11f 100644
--- a/src/main/scala/org/scalajs/dom/HTMLTableRowElement.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLTableRowElement.scala
@@ -24,7 +24,7 @@ abstract class HTMLTableRowElement extends HTMLElement with HTMLTableAlignment {
   /** Returns a live HTMLCollection containing the cells in the row. The HTMLCollection is live and is automatically
     * updated when cells are added or removed.
     */
-  def cells: HTMLCollection = js.native
+  def cells: HTMLCollection[Element] = js.native
 
   var borderColorLight: js.Any = js.native
 
diff --git a/src/main/scala/org/scalajs/dom/HTMLTableSectionElement.scala b/src/main/scala/org/scalajs/dom/HTMLTableSectionElement.scala
index db669bcb0..6b9f13ac8 100644
--- a/src/main/scala/org/scalajs/dom/HTMLTableSectionElement.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLTableSectionElement.scala
@@ -20,7 +20,7 @@ abstract class HTMLTableSectionElement extends HTMLElement with HTMLTableAlignme
   /** Returns a live HTMLCollection containing the rows in the section. The HTMLCollection is live and is automatically
     * updated when rows are added or removed.
     */
-  def rows: HTMLCollection = js.native
+  def rows: HTMLCollection[Element] = js.native
 
   /** Removes the cell at the given position in the section. If the given position is greater (or equal as it starts at
     * zero) than the amount of rows in the section, or is smaller than 0, it raises a DOMException with the
diff --git a/src/main/scala/org/scalajs/dom/ParentNode.scala b/src/main/scala/org/scalajs/dom/ParentNode.scala
index a2469ee0b..b6d04f07c 100644
--- a/src/main/scala/org/scalajs/dom/ParentNode.scala
+++ b/src/main/scala/org/scalajs/dom/ParentNode.scala
@@ -18,7 +18,7 @@ import scala.scalajs.js.|
 trait ParentNode extends js.Object {
 
   /** Returns a live HTMLCollection containing all objects of type Element that are children of the object. */
-  def children: HTMLCollection = js.native
+  def children: HTMLCollection[Element] = js.native
 
   /** Returns the Element that is the first child of the object, or null if there is none. */
   def firstElementChild: Element = js.native
diff --git a/src/main/scala/org/scalajs/dom/html.scala b/src/main/scala/org/scalajs/dom/html.scala
index 74451c232..4168eb1b2 100644
--- a/src/main/scala/org/scalajs/dom/html.scala
+++ b/src/main/scala/org/scalajs/dom/html.scala
@@ -10,7 +10,7 @@ object html {
   type Button = HTMLButtonElement
   type BR = HTMLBRElement
   type Canvas = HTMLCanvasElement
-  type Collection = HTMLCollection
+  type Collection[E <: Element] = HTMLCollection[E]
   type DataList = HTMLDataListElement
   type Div = HTMLDivElement
   type DList = HTMLDListElement
diff --git a/src/main/scala/org/scalajs/dom/raw.scala b/src/main/scala/org/scalajs/dom/raw.scala
index 8adcc480e..a4d731b5a 100644
--- a/src/main/scala/org/scalajs/dom/raw.scala
+++ b/src/main/scala/org/scalajs/dom/raw.scala
@@ -321,7 +321,7 @@ object raw {
   type HTMLCanvasElement = dom.HTMLCanvasElement
 
   @deprecated("use dom.HTMLCollectionElement instead", "2.0.0")
-  type HTMLCollectionElement = dom.HTMLCollection
+  type HTMLCollectionElement[E <: dom.Element] = dom.HTMLCollection[E]
 
   @deprecated("use dom.HTMLDataListElement instead", "2.0.0")
   type HTMLDataListElement = dom.HTMLDataListElement

From 77f33b6d9caf0112b1bf7531a52b1f1731e77f9f Mon Sep 17 00:00:00 2001
From: ghostbuster91 <kghost0@gmail.com>
Date: Fri, 15 Oct 2021 07:58:03 +0200
Subject: [PATCH 4/7] Add HTMLFormControlsCollection, RadioNodeList and remove
 upper-bound on HtmlCollection

---
 api-reports/2_12.txt                          |  8 +++++++
 api-reports/2_13.txt                          |  8 +++++++
 .../org/scalajs/dom/HTMLCollection.scala      |  2 +-
 .../dom/HTMLFormControlsCollection.scala      | 22 +++++++++++++++++++
 src/main/scala/org/scalajs/dom/NodeList.scala |  2 +-
 .../scala/org/scalajs/dom/RadioNodeList.scala | 18 +++++++++++++++
 6 files changed, 58 insertions(+), 2 deletions(-)
 create mode 100644 src/main/scala/org/scalajs/dom/HTMLFormControlsCollection.scala
 create mode 100644 src/main/scala/org/scalajs/dom/RadioNodeList.scala

diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index 657c1755b..360cee428 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -4874,6 +4874,10 @@ HTMLFieldSetElement[JC] var title: String
 HTMLFieldSetElement[JC] def validationMessage: String
 HTMLFieldSetElement[JC] def validity: ValidityState
 HTMLFieldSetElement[JC] def willValidate: Boolean
+HTMLFormControlsCollection[JC] @JSBracketAccess def apply(index: Int): T
+HTMLFormControlsCollection[JC] def item(index: Int): E
+HTMLFormControlsCollection[JC] def length: Int
+HTMLFormControlsCollection[JC] def namedItem(name: String): E
 HTMLFormElement[JC] var acceptCharset: String
 HTMLFormElement[JC] var accessKey: String
 HTMLFormElement[JC] var action: String
@@ -15070,6 +15074,10 @@ ProgressEvent[JT] def target: EventTarget
 ProgressEvent[JT] def timeStamp: Double
 ProgressEvent[JT] def total: Double
 ProgressEvent[JT] def `type`: String
+RadioNodeList[JC] @JSBracketAccess def apply(index: Int): T
+RadioNodeList[JC] def item(index: Int): T
+RadioNodeList[JC] def length: Int
+RadioNodeList[JC] def value: String
 Range[JC] def cloneContents(): DocumentFragment
 Range[JC] def cloneRange(): Range
 Range[JC] def collapse(toStart: Boolean): Unit
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index 657c1755b..360cee428 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -4874,6 +4874,10 @@ HTMLFieldSetElement[JC] var title: String
 HTMLFieldSetElement[JC] def validationMessage: String
 HTMLFieldSetElement[JC] def validity: ValidityState
 HTMLFieldSetElement[JC] def willValidate: Boolean
+HTMLFormControlsCollection[JC] @JSBracketAccess def apply(index: Int): T
+HTMLFormControlsCollection[JC] def item(index: Int): E
+HTMLFormControlsCollection[JC] def length: Int
+HTMLFormControlsCollection[JC] def namedItem(name: String): E
 HTMLFormElement[JC] var acceptCharset: String
 HTMLFormElement[JC] var accessKey: String
 HTMLFormElement[JC] var action: String
@@ -15070,6 +15074,10 @@ ProgressEvent[JT] def target: EventTarget
 ProgressEvent[JT] def timeStamp: Double
 ProgressEvent[JT] def total: Double
 ProgressEvent[JT] def `type`: String
+RadioNodeList[JC] @JSBracketAccess def apply(index: Int): T
+RadioNodeList[JC] def item(index: Int): T
+RadioNodeList[JC] def length: Int
+RadioNodeList[JC] def value: String
 Range[JC] def cloneContents(): DocumentFragment
 Range[JC] def cloneRange(): Range
 Range[JC] def collapse(toStart: Boolean): Unit
diff --git a/src/main/scala/org/scalajs/dom/HTMLCollection.scala b/src/main/scala/org/scalajs/dom/HTMLCollection.scala
index 3c7e496fd..b4c9d7134 100644
--- a/src/main/scala/org/scalajs/dom/HTMLCollection.scala
+++ b/src/main/scala/org/scalajs/dom/HTMLCollection.scala
@@ -14,7 +14,7 @@ import scala.scalajs.js.annotation._
   */
 @js.native
 @JSGlobal
-abstract class HTMLCollection[E <: Element] extends DOMList[E] {
+abstract class HTMLCollection[E] extends DOMList[E] {
   def item(index: Int): E = js.native
 
   /** Returns the specific node whose ID or, as a fallback, name matches the string specified by name. Matching by name
diff --git a/src/main/scala/org/scalajs/dom/HTMLFormControlsCollection.scala b/src/main/scala/org/scalajs/dom/HTMLFormControlsCollection.scala
new file mode 100644
index 000000000..1a1343e19
--- /dev/null
+++ b/src/main/scala/org/scalajs/dom/HTMLFormControlsCollection.scala
@@ -0,0 +1,22 @@
+/** All documentation for facades is thanks to Mozilla Contributors at https://developer.mozilla.org/en-US/docs/Web/API
+  * and available under the Creative Commons Attribution-ShareAlike v2.5 or later.
+  * http://creativecommons.org/licenses/by-sa/2.5/
+  *
+  * Everything else is under the MIT License http://opensource.org/licenses/MIT
+  */
+package org.scalajs.dom
+
+import scala.scalajs.js
+import scala.scalajs.js.annotation._
+import scala.scalajs.js.|
+
+/** The HTMLFormControlsCollection interface represents a collection of HTML form control elements.
+  *
+  * It represents the lists returned by the HTMLFormElement interface's elements property and the HTMLFieldSetElement
+  * interface's elements property.
+  *
+  * This interface replaces one method from HTMLCollection, on which it is based.
+  */
+@js.native
+@JSGlobal
+class HTMLFormControlsCollection private[this] () extends HTMLCollection[RadioNodeList | Element]
diff --git a/src/main/scala/org/scalajs/dom/NodeList.scala b/src/main/scala/org/scalajs/dom/NodeList.scala
index ef87363de..a47789397 100644
--- a/src/main/scala/org/scalajs/dom/NodeList.scala
+++ b/src/main/scala/org/scalajs/dom/NodeList.scala
@@ -13,6 +13,6 @@ import scala.scalajs.js.annotation._
   */
 @js.native
 @JSGlobal
-class NodeList[+T <: Node] private[this] () extends DOMList[T] {
+class NodeList[+T <: Node]() extends DOMList[T] {
   def item(index: Int): T = js.native
 }
diff --git a/src/main/scala/org/scalajs/dom/RadioNodeList.scala b/src/main/scala/org/scalajs/dom/RadioNodeList.scala
new file mode 100644
index 000000000..ce17be5d9
--- /dev/null
+++ b/src/main/scala/org/scalajs/dom/RadioNodeList.scala
@@ -0,0 +1,18 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+import scala.scalajs.js.annotation.JSGlobal
+
+/** The RadioNodeList interface represents a collection of radio elements in a <form> or a <fieldset> element. */
+@js.native
+@JSGlobal
+class RadioNodeList extends NodeList[Node] {
+
+  /** If the underlying element collection contains radio buttons, the value property represents the checked radio
+    * button. On retrieving the value property, the value of the currently checked radio button is returned as a string.
+    * If the collection does not contain any radio buttons or none of the radio buttons in the collection is in checked
+    * state, the empty string is returned. On setting the value property, the first radio button input element whose
+    * value property is equal to the new value will be set to checked.
+    */
+  def value: String = js.native
+}

From 568172cde79fc26cbf649afde39928a2b6135059 Mon Sep 17 00:00:00 2001
From: ghostbuster91 <kghost0@gmail.com>
Date: Sat, 16 Oct 2021 11:08:32 +0200
Subject: [PATCH 5/7] Remove upper-bound type constrain from HTMLCollection
 type aliases

---
 api-reports/2_12.txt                      | 4 ++--
 api-reports/2_13.txt                      | 4 ++--
 src/main/scala/org/scalajs/dom/html.scala | 2 +-
 src/main/scala/org/scalajs/dom/raw.scala  | 4 ++--
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index 360cee428..51dfb816c 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -25794,7 +25794,7 @@ html[SO] type Base = HTMLBaseElement
 html[SO] type Body = HTMLBodyElement
 html[SO] type Button = HTMLButtonElement
 html[SO] type Canvas = HTMLCanvasElement
-html[SO] type Collection[E <: Element] = HTMLCollection[E]
+html[SO] type Collection[E] = HTMLCollection[E]
 html[SO] type DList = HTMLDListElement
 html[SO] type DataList = HTMLDataListElement
 html[SO] type Div = HTMLDivElement
@@ -25980,7 +25980,7 @@ raw[SO] type HTMLBaseElement = dom.HTMLBaseElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLBodyElement = dom.HTMLBodyElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLButtonElement = dom.HTMLButtonElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLCanvasElement = dom.HTMLCanvasElement  (@deprecated in 2.0.0)
-raw[SO] type HTMLCollectionElement[E <: dom.Element] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
+raw[SO] type HTMLCollectionElement[E] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
 raw[SO] type HTMLDListElement = dom.HTMLDListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDataListElement = dom.HTMLDataListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDivElement = dom.HTMLDivElement  (@deprecated in 2.0.0)
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index 360cee428..51dfb816c 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -25794,7 +25794,7 @@ html[SO] type Base = HTMLBaseElement
 html[SO] type Body = HTMLBodyElement
 html[SO] type Button = HTMLButtonElement
 html[SO] type Canvas = HTMLCanvasElement
-html[SO] type Collection[E <: Element] = HTMLCollection[E]
+html[SO] type Collection[E] = HTMLCollection[E]
 html[SO] type DList = HTMLDListElement
 html[SO] type DataList = HTMLDataListElement
 html[SO] type Div = HTMLDivElement
@@ -25980,7 +25980,7 @@ raw[SO] type HTMLBaseElement = dom.HTMLBaseElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLBodyElement = dom.HTMLBodyElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLButtonElement = dom.HTMLButtonElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLCanvasElement = dom.HTMLCanvasElement  (@deprecated in 2.0.0)
-raw[SO] type HTMLCollectionElement[E <: dom.Element] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
+raw[SO] type HTMLCollectionElement[E] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
 raw[SO] type HTMLDListElement = dom.HTMLDListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDataListElement = dom.HTMLDataListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDivElement = dom.HTMLDivElement  (@deprecated in 2.0.0)
diff --git a/src/main/scala/org/scalajs/dom/html.scala b/src/main/scala/org/scalajs/dom/html.scala
index 4168eb1b2..b58ff12b4 100644
--- a/src/main/scala/org/scalajs/dom/html.scala
+++ b/src/main/scala/org/scalajs/dom/html.scala
@@ -10,7 +10,7 @@ object html {
   type Button = HTMLButtonElement
   type BR = HTMLBRElement
   type Canvas = HTMLCanvasElement
-  type Collection[E <: Element] = HTMLCollection[E]
+  type Collection[E] = HTMLCollection[E]
   type DataList = HTMLDataListElement
   type Div = HTMLDivElement
   type DList = HTMLDListElement
diff --git a/src/main/scala/org/scalajs/dom/raw.scala b/src/main/scala/org/scalajs/dom/raw.scala
index a4d731b5a..9dc16e6d8 100644
--- a/src/main/scala/org/scalajs/dom/raw.scala
+++ b/src/main/scala/org/scalajs/dom/raw.scala
@@ -320,8 +320,8 @@ object raw {
   @deprecated("use dom.HTMLCanvasElement instead", "2.0.0")
   type HTMLCanvasElement = dom.HTMLCanvasElement
 
-  @deprecated("use dom.HTMLCollectionElement instead", "2.0.0")
-  type HTMLCollectionElement[E <: dom.Element] = dom.HTMLCollection[E]
+  @deprecated("use dom.HTMLCollection instead", "2.0.0")
+  type HTMLCollectionElement[E] = dom.HTMLCollection[E]
 
   @deprecated("use dom.HTMLDataListElement instead", "2.0.0")
   type HTMLDataListElement = dom.HTMLDataListElement

From ea0eb4faa57e5d226bc8e45069f562bd396cec5f Mon Sep 17 00:00:00 2001
From: Kasper Kondzielski <ghostbuster91@users.noreply.github.com>
Date: Sat, 16 Oct 2021 11:27:34 +0200
Subject: [PATCH 6/7] Drop generic type from HTMLCollectionElement to restore
 bin-compat

Co-authored-by: Arman Bilge <armanbilge@gmail.com>
---
 src/main/scala/org/scalajs/dom/raw.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/org/scalajs/dom/raw.scala b/src/main/scala/org/scalajs/dom/raw.scala
index 9dc16e6d8..ba957f84c 100644
--- a/src/main/scala/org/scalajs/dom/raw.scala
+++ b/src/main/scala/org/scalajs/dom/raw.scala
@@ -321,7 +321,7 @@ object raw {
   type HTMLCanvasElement = dom.HTMLCanvasElement
 
   @deprecated("use dom.HTMLCollection instead", "2.0.0")
-  type HTMLCollectionElement[E] = dom.HTMLCollection[E]
+  type HTMLCollectionElement = dom.HTMLCollection[dom.Element]
 
   @deprecated("use dom.HTMLDataListElement instead", "2.0.0")
   type HTMLDataListElement = dom.HTMLDataListElement

From 00dccef040aac5099b0ae4e0d8b4c25cc20ff5e8 Mon Sep 17 00:00:00 2001
From: ghostbuster91 <kghost0@gmail.com>
Date: Sat, 16 Oct 2021 11:36:53 +0200
Subject: [PATCH 7/7] Regenerate api reports

---
 api-reports/2_12.txt | 2 +-
 api-reports/2_13.txt | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index 51dfb816c..5cf703d42 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -25980,7 +25980,7 @@ raw[SO] type HTMLBaseElement = dom.HTMLBaseElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLBodyElement = dom.HTMLBodyElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLButtonElement = dom.HTMLButtonElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLCanvasElement = dom.HTMLCanvasElement  (@deprecated in 2.0.0)
-raw[SO] type HTMLCollectionElement[E] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
+raw[SO] type HTMLCollectionElement = dom.HTMLCollection[dom.Element]  (@deprecated in 2.0.0)
 raw[SO] type HTMLDListElement = dom.HTMLDListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDataListElement = dom.HTMLDataListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDivElement = dom.HTMLDivElement  (@deprecated in 2.0.0)
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index 51dfb816c..5cf703d42 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -25980,7 +25980,7 @@ raw[SO] type HTMLBaseElement = dom.HTMLBaseElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLBodyElement = dom.HTMLBodyElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLButtonElement = dom.HTMLButtonElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLCanvasElement = dom.HTMLCanvasElement  (@deprecated in 2.0.0)
-raw[SO] type HTMLCollectionElement[E] = dom.HTMLCollection[E]  (@deprecated in 2.0.0)
+raw[SO] type HTMLCollectionElement = dom.HTMLCollection[dom.Element]  (@deprecated in 2.0.0)
 raw[SO] type HTMLDListElement = dom.HTMLDListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDataListElement = dom.HTMLDataListElement  (@deprecated in 2.0.0)
 raw[SO] type HTMLDivElement = dom.HTMLDivElement  (@deprecated in 2.0.0)