diff --git a/app/code/Magento/Customer/Block/Address/Book.php b/app/code/Magento/Customer/Block/Address/Book.php
index f37ae21a9b83c..9a98ca4aae5da 100644
--- a/app/code/Magento/Customer/Block/Address/Book.php
+++ b/app/code/Magento/Customer/Block/Address/Book.php
@@ -13,7 +13,6 @@
  * Customer address book block
  *
  * @api
- * @author      Magento Core Team <core@magentocommerce.com>
  * @since 100.0.2
  */
 class Book extends \Magento\Framework\View\Element\Template
@@ -167,6 +166,7 @@ public function getAdditionalAddresses()
         try {
             $addresses = $this->addressesGrid->getAdditionalAddresses();
         } catch (\Magento\Framework\Exception\NoSuchEntityException $e) {
+            return false;
         }
         return empty($addresses) ? false : $addresses;
     }
@@ -198,6 +198,7 @@ public function getCustomer()
         try {
             $customer = $this->currentCustomer->getCustomer();
         } catch (\Magento\Framework\Exception\NoSuchEntityException $e) {
+            return null;
         }
         return $customer;
     }
diff --git a/app/code/Magento/Customer/Block/Address/Renderer/RendererInterface.php b/app/code/Magento/Customer/Block/Address/Renderer/RendererInterface.php
index cb942b13410e7..fa619e60170bd 100644
--- a/app/code/Magento/Customer/Block/Address/Renderer/RendererInterface.php
+++ b/app/code/Magento/Customer/Block/Address/Renderer/RendererInterface.php
@@ -12,7 +12,6 @@
  * Address renderer interface
  *
  * @api
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 interface RendererInterface
 {
diff --git a/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Boolean.php b/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Boolean.php
index dc445e4b2dd35..0cca291d90b52 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Boolean.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Boolean.php
@@ -4,17 +4,16 @@
  * See COPYING.txt for license details.
  */
 
+namespace Magento\Customer\Block\Adminhtml\Form\Element;
+
 /**
  * Customer Widget Form Boolean Element Block
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
-namespace Magento\Customer\Block\Adminhtml\Form\Element;
-
 class Boolean extends \Magento\Framework\Data\Form\Element\Select
 {
     /**
      * Prepare default SELECT values
+     *
      * @return void
      */
     protected function _construct()
diff --git a/app/code/Magento/Customer/Block/Adminhtml/Form/Element/File.php b/app/code/Magento/Customer/Block/Adminhtml/Form/Element/File.php
index 7e254b3227752..2f70d54c9646a 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/Form/Element/File.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/Form/Element/File.php
@@ -7,8 +7,6 @@
 
 /**
  * Customer Widget Form File Element Block
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 class File extends \Magento\Framework\Data\Form\Element\AbstractElement
 {
@@ -18,8 +16,6 @@ class File extends \Magento\Framework\Data\Form\Element\AbstractElement
     protected $_assetRepo;
 
     /**
-     * Adminhtml data
-     *
      * @var \Magento\Backend\Helper\Data
      */
     protected $_adminhtmlData = null;
diff --git a/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Image.php b/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Image.php
index 2f6609486ee73..3254682552d1f 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Image.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/Form/Element/Image.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Widget Form Image File Element Block
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Block\Adminhtml\Form\Element;
 
diff --git a/app/code/Magento/Customer/Block/Adminhtml/Grid/Filter/Country.php b/app/code/Magento/Customer/Block/Adminhtml/Grid/Filter/Country.php
index 64fe7c8b6188a..d8bbd8cee966a 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/Grid/Filter/Country.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/Grid/Filter/Country.php
@@ -7,8 +7,6 @@
 
 /**
  * Country customer grid column filter
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 class Country extends \Magento\Backend\Block\Widget\Grid\Column\Filter\Select
 {
@@ -34,6 +32,8 @@ public function __construct(
     }
 
     /**
+     * Return options
+     *
      * @return array
      */
     protected function _getOptions()
diff --git a/app/code/Magento/Customer/Block/Adminhtml/Grid/Renderer/Multiaction.php b/app/code/Magento/Customer/Block/Adminhtml/Grid/Renderer/Multiaction.php
index 726daf69dc587..fe4dfe8bc3604 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/Grid/Renderer/Multiaction.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/Grid/Renderer/Multiaction.php
@@ -11,8 +11,6 @@
 
 /**
  * Adminhtml customers wishlist grid item action renderer for few action controls in one cell
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 class Multiaction extends \Magento\Backend\Block\Widget\Grid\Column\Renderer\Action
 {
diff --git a/app/code/Magento/Customer/Block/Adminhtml/Group.php b/app/code/Magento/Customer/Block/Adminhtml/Group.php
index b5448fb3c115d..8ac0179088dab 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/Group.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/Group.php
@@ -6,8 +6,6 @@
 
 /**
  * Adminhtml customers group page content block
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Block\Adminhtml;
 
diff --git a/app/code/Magento/Customer/Block/Adminhtml/Sales/Order/Address/Form/Renderer/Vat.php b/app/code/Magento/Customer/Block/Adminhtml/Sales/Order/Address/Form/Renderer/Vat.php
index ebdf0090fe1c8..ad72d9e88a187 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/Sales/Order/Address/Form/Renderer/Vat.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/Sales/Order/Address/Form/Renderer/Vat.php
@@ -11,8 +11,6 @@
 
 /**
  * VAT ID element renderer
- *
- * @author     Magento Core Team <core@magentocommerce.com>
  */
 class Vat extends \Magento\Backend\Block\Widget\Form\Renderer\Fieldset\Element
 {
diff --git a/app/code/Magento/Customer/Block/Adminhtml/System/Config/Validatevat.php b/app/code/Magento/Customer/Block/Adminhtml/System/Config/Validatevat.php
index 8cbe5c0680bd3..5327dba890594 100644
--- a/app/code/Magento/Customer/Block/Adminhtml/System/Config/Validatevat.php
+++ b/app/code/Magento/Customer/Block/Adminhtml/System/Config/Validatevat.php
@@ -6,8 +6,6 @@
 
 /**
  * Adminhtml VAT ID validation block
- *
- * @author     Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Block\Adminhtml\System\Config;
 
diff --git a/app/code/Magento/Customer/Block/Form/Login.php b/app/code/Magento/Customer/Block/Form/Login.php
index d3d3306a49b44..3b9c6527916cb 100644
--- a/app/code/Magento/Customer/Block/Form/Login.php
+++ b/app/code/Magento/Customer/Block/Form/Login.php
@@ -9,7 +9,6 @@
  * Customer login form block
  *
  * @api
- * @author      Magento Core Team <core@magentocommerce.com>
  * @since 100.0.2
  */
 class Login extends \Magento\Framework\View\Element\Template
diff --git a/app/code/Magento/Customer/Controller/Adminhtml/System/Config/Validatevat.php b/app/code/Magento/Customer/Controller/Adminhtml/System/Config/Validatevat.php
index 31d23c9e3694e..c7952bd2be8cd 100644
--- a/app/code/Magento/Customer/Controller/Adminhtml/System/Config/Validatevat.php
+++ b/app/code/Magento/Customer/Controller/Adminhtml/System/Config/Validatevat.php
@@ -7,8 +7,6 @@
 
 /**
  * VAT validation controller
- *
- * @author     Magento Core Team <core@magentocommerce.com>
  */
 abstract class Validatevat extends \Magento\Backend\App\Action
 {
@@ -17,7 +15,7 @@ abstract class Validatevat extends \Magento\Backend\App\Action
      *
      * @see _isAllowed()
      */
-    const ADMIN_RESOURCE = 'Magento_Customer::manage';
+    public const ADMIN_RESOURCE = 'Magento_Customer::manage';
 
     /**
      * Perform customer VAT ID validation
diff --git a/app/code/Magento/Customer/Model/Address/Form.php b/app/code/Magento/Customer/Model/Address/Form.php
index 279628bba1392..2a010a280ff77 100644
--- a/app/code/Magento/Customer/Model/Address/Form.php
+++ b/app/code/Magento/Customer/Model/Address/Form.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Address Form Model
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Model\Address;
 
diff --git a/app/code/Magento/Customer/Model/Attribute/Backend/Data/Boolean.php b/app/code/Magento/Customer/Model/Attribute/Backend/Data/Boolean.php
index c62d724178378..84f09de699e91 100644
--- a/app/code/Magento/Customer/Model/Attribute/Backend/Data/Boolean.php
+++ b/app/code/Magento/Customer/Model/Attribute/Backend/Data/Boolean.php
@@ -7,8 +7,6 @@
 
 /**
  * Boolean customer attribute backend model
- *
- * @author     Magento Core Team <core@magentocommerce.com>
  */
 class Boolean extends \Magento\Eav\Model\Entity\Attribute\Backend\AbstractBackend
 {
diff --git a/app/code/Magento/Customer/Model/Attribute/Data/AbstractData.php b/app/code/Magento/Customer/Model/Attribute/Data/AbstractData.php
index b68fb20019da9..05b20dfa5823c 100644
--- a/app/code/Magento/Customer/Model/Attribute/Data/AbstractData.php
+++ b/app/code/Magento/Customer/Model/Attribute/Data/AbstractData.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Attribute Abstract Data Model
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Model\Attribute\Data;
 
diff --git a/app/code/Magento/Customer/Model/Attribute/Data/Boolean.php b/app/code/Magento/Customer/Model/Attribute/Data/Boolean.php
index b40bdd12fb051..7b9aedf1a6327 100644
--- a/app/code/Magento/Customer/Model/Attribute/Data/Boolean.php
+++ b/app/code/Magento/Customer/Model/Attribute/Data/Boolean.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Attribute Boolean Data Model
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Model\Attribute\Data;
 
diff --git a/app/code/Magento/Customer/Model/Attribute/Data/Date.php b/app/code/Magento/Customer/Model/Attribute/Data/Date.php
index 1841b245099a3..0014fd3f56ce7 100644
--- a/app/code/Magento/Customer/Model/Attribute/Data/Date.php
+++ b/app/code/Magento/Customer/Model/Attribute/Data/Date.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Attribute Date Data Model
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Model\Attribute\Data;
 
diff --git a/app/code/Magento/Customer/Model/Attribute/Data/File.php b/app/code/Magento/Customer/Model/Attribute/Data/File.php
index afdfe0b300957..04c79888c6035 100644
--- a/app/code/Magento/Customer/Model/Attribute/Data/File.php
+++ b/app/code/Magento/Customer/Model/Attribute/Data/File.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Attribute File Data Model
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Model\Attribute\Data;
 
diff --git a/app/code/Magento/Customer/Model/Attribute/Data/Hidden.php b/app/code/Magento/Customer/Model/Attribute/Data/Hidden.php
index 2ec12654b08b2..f7ceb2ce500fb 100644
--- a/app/code/Magento/Customer/Model/Attribute/Data/Hidden.php
+++ b/app/code/Magento/Customer/Model/Attribute/Data/Hidden.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Attribute Hidden text Data Model
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Model\Attribute\Data;
 
diff --git a/app/code/Magento/Customer/Model/Attribute/Data/Image.php b/app/code/Magento/Customer/Model/Attribute/Data/Image.php
index 11685f6b23ad6..c28ee87aaaf60 100644
--- a/app/code/Magento/Customer/Model/Attribute/Data/Image.php
+++ b/app/code/Magento/Customer/Model/Attribute/Data/Image.php
@@ -6,8 +6,6 @@
 
 /**
  * Customer Attribute Image File Data Model
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 namespace Magento\Customer\Model\Attribute\Data;
 
diff --git a/app/code/Magento/Customer/Model/ResourceModel/Group/Collection.php b/app/code/Magento/Customer/Model/ResourceModel/Group/Collection.php
index 6e93210d04c3c..c7ac2817d741c 100644
--- a/app/code/Magento/Customer/Model/ResourceModel/Group/Collection.php
+++ b/app/code/Magento/Customer/Model/ResourceModel/Group/Collection.php
@@ -7,8 +7,6 @@
 
 /**
  * Customer group collection
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 class Collection extends \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
 {
diff --git a/app/code/Magento/Customer/Model/ResourceModel/Online/Grid/Collection.php b/app/code/Magento/Customer/Model/ResourceModel/Online/Grid/Collection.php
index 712ba02d59355..c3a43fb14bf9c 100644
--- a/app/code/Magento/Customer/Model/ResourceModel/Online/Grid/Collection.php
+++ b/app/code/Magento/Customer/Model/ResourceModel/Online/Grid/Collection.php
@@ -16,8 +16,6 @@
 
 /**
  * Flat customer online grid collection
- *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 class Collection extends SearchResult
 {