diff --git a/.github/workflows/generated-sources-master.yml b/.github/workflows/generated-sources-master.yml
index aebae86e7e..058d762b79 100644
--- a/.github/workflows/generated-sources-master.yml
+++ b/.github/workflows/generated-sources-master.yml
@@ -13,11 +13,11 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '11'
+          java-version: '21'
 
       - name: Run Gradle task
         run: ./gradlew :core:processKDocsMain korro
diff --git a/.github/workflows/generated-sources.yml b/.github/workflows/generated-sources.yml
index f9301fbeec..e0339d89b2 100644
--- a/.github/workflows/generated-sources.yml
+++ b/.github/workflows/generated-sources.yml
@@ -26,11 +26,11 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '11'
+          java-version: '21'
 
       - name: Configure Git User
         run: |
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c10141fac1..b1ec0e59d5 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -85,11 +85,14 @@ so do familiarize yourself with the following guidelines.
 
 ## Environment requirements
 
-* JDK >= 11 referred to by the `JAVA_HOME` environment variable.
+* JDK >= 21 referred to by the `JAVA_HOME` environment variable.
 
-  * Note, any version above 11 should work in theory, but JDK 11 is the only version we test with,
+  * Note, any version above 21 should work in theory, but JDK 21 is the only version we test with,
   so it is the recommended version.
 
+* JDK == 11 referred to by the `JDK_11_0` environment variable or `gradle.properties`/`local.properties`.
+  * This is used for testing our compiler plugins.
+
 * We recommend using [IntelliJ IDEA](https://www.jetbrains.com/idea/download/) as the IDE. This
 has the best support for Kotlin, compiler plugins, Gradle, and [Kotlin Notebook](https://kotlinlang.org/docs/kotlin-notebook-overview.html) of course.
 
diff --git a/build.gradle.kts b/build.gradle.kts
index bec23bc336..078d1d01c4 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -89,16 +89,10 @@ fun String.findVersion(): Version {
 
 // these names of outdated dependencies will not show up in the table output
 val dependencyUpdateExclusions = listOf(
-    // TODO Requires more work to be updated to 1.7.0+, https://github.com/Kotlin/dataframe/issues/594
-    libs.plugins.kover.get().pluginId,
-    // TODO 5.8.0 is not possible due to https://github.com/Kotlin/dataframe/issues/595
-    libs.kotestAssertions.get().name,
-    // Can't be updated to 7.4.0+ due to Java 8 compatibility
-    libs.android.gradle.api.get().group,
     // Directly dependent on the Gradle version
     "org.gradle.kotlin.kotlin-dsl",
-    // Can't be updated to 2.1.0+ due to Java 8 compatibility
-    libs.plugins.simpleGit.get().pluginId,
+    // need to revise our tests to update
+    libs.android.gradle.api.get().group,
 )
 
 // run `./gradlew dependencyUpdates` to check for updates
@@ -139,18 +133,25 @@ tasks.named<DependencyUpdatesTask>("dependencyUpdates").configure {
     }
 }
 
-kotlin.jvmToolchain(11)
+kotlin {
+    jvmToolchain(21)
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_11
+    }
+}
 
 allprojects {
     tasks.withType<KotlinCompile> {
         compilerOptions {
             jvmTarget = JvmTarget.JVM_11
+            freeCompilerArgs.add("-Xjdk-release=11")
         }
     }
 
     tasks.withType<JavaCompile> {
         sourceCompatibility = JavaVersion.VERSION_11.toString()
         targetCompatibility = JavaVersion.VERSION_11.toString()
+        options.release.set(11)
     }
 
     // Attempts to configure ktlint for each sub-project that uses the plugin
@@ -165,7 +166,7 @@ allprojects {
         }
 
         // set the java toolchain version to 11 for all subprojects for CI stability
-        extensions.findByType<KotlinJvmProjectExtension>()?.jvmToolchain(11)
+        extensions.findByType<KotlinJvmProjectExtension>()?.jvmToolchain(21)
 
         // Attempts to configure buildConfig for each sub-project that uses it
         try {
diff --git a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/io/json.kt b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/io/json.kt
index a54a448626..baff3b703f 100644
--- a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/io/json.kt
+++ b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/io/json.kt
@@ -1121,7 +1121,7 @@ class JsonTests {
     @Test
     fun `serialize column with list of objects`() {
         val df = dataFrameOf("col")(Regex(".+").findAll("abc").toList())
-        val json = shouldNotThrowAny { df.toJson() }
+        val json = shouldNotThrowAny { df.toJson() }!!
         val list = DataFrame.readJsonStr(json)["col"][0].shouldBeInstanceOf<List<*>>()
         list[0].shouldBeInstanceOf<String>()
     }
diff --git a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/BasicMathTests.kt b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/BasicMathTests.kt
index 0c0c156f26..53121d1a9f 100644
--- a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/BasicMathTests.kt
+++ b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/BasicMathTests.kt
@@ -1,5 +1,6 @@
 package org.jetbrains.kotlinx.dataframe.statistics
 
+import io.kotest.matchers.doubles.shouldBeNaN
 import io.kotest.matchers.shouldBe
 import org.jetbrains.kotlinx.dataframe.DataColumn
 import org.jetbrains.kotlinx.dataframe.api.columnOf
@@ -18,10 +19,10 @@ class BasicMathTests {
 
     @Test
     fun `mean with nans and nulls`() {
-        columnOf(10, 20, Double.NaN, null).mean() shouldBe Double.NaN
+        columnOf(10, 20, Double.NaN, null).mean().shouldBeNaN()
         columnOf(10, 20, Double.NaN, null).mean(skipNA = true) shouldBe 15
 
-        DataColumn.createValueColumn("", emptyList<Nothing>(), nothingType(false)).mean() shouldBe Double.NaN
-        DataColumn.createValueColumn("", listOf(null), nothingType(true)).mean() shouldBe Double.NaN
+        DataColumn.createValueColumn("", emptyList<Nothing>(), nothingType(false)).mean().shouldBeNaN()
+        DataColumn.createValueColumn("", listOf(null), nothingType(true)).mean().shouldBeNaN()
     }
 }
diff --git a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/std.kt b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/std.kt
index 34f9548b9f..3364fb6d04 100644
--- a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/std.kt
+++ b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/statistics/std.kt
@@ -1,5 +1,6 @@
 package org.jetbrains.kotlinx.dataframe.statistics
 
+import io.kotest.matchers.doubles.shouldBeNaN
 import io.kotest.matchers.shouldBe
 import org.jetbrains.kotlinx.dataframe.DataColumn
 import org.jetbrains.kotlinx.dataframe.api.columnOf
@@ -59,10 +60,10 @@ class StdTests {
         val empty = DataColumn.createValueColumn("", emptyList<Nothing>(), nothingType(false))
         val nullable = DataColumn.createValueColumn("", listOf(null), nothingType(true))
 
-        empty.values().std(empty.type) shouldBe Double.NaN
-        nullable.values().std(nullable.type) shouldBe Double.NaN
+        empty.values().std(empty.type).shouldBeNaN()
+        nullable.values().std(nullable.type).shouldBeNaN()
 
-        empty.std() shouldBe Double.NaN
-        nullable.std() shouldBe Double.NaN
+        empty.std().shouldBeNaN()
+        nullable.std().shouldBeNaN()
     }
 }
diff --git a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/animals/AnimalsTests.kt b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/animals/AnimalsTests.kt
index f8ee4b37d5..2bc8b69b37 100644
--- a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/animals/AnimalsTests.kt
+++ b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/animals/AnimalsTests.kt
@@ -1,5 +1,6 @@
 package org.jetbrains.kotlinx.dataframe.testSets.animals
 
+import io.kotest.matchers.doubles.shouldBeNaN
 import io.kotest.matchers.shouldBe
 import org.jetbrains.kotlinx.dataframe.api.columnOf
 import org.jetbrains.kotlinx.dataframe.api.dataFrameOf
@@ -42,7 +43,7 @@ class AnimalsTests {
             .update { age }.with { Double.NaN }
             .update { visits }.withNull()
         val mean = cleared.mean()
-        mean[age] shouldBe Double.NaN
-        (mean[visits.name()] as Double).isNaN() shouldBe true
+        mean[age].shouldBeNaN()
+        (mean[visits.name()] as Double).shouldBeNaN()
     }
 }
diff --git a/dataframe-openapi-generator/src/test/kotlin/OpenApiTests.kt b/dataframe-openapi-generator/src/test/kotlin/OpenApiTests.kt
index d830d0cd76..1ad85f6d22 100644
--- a/dataframe-openapi-generator/src/test/kotlin/OpenApiTests.kt
+++ b/dataframe-openapi-generator/src/test/kotlin/OpenApiTests.kt
@@ -1,7 +1,6 @@
 import io.kotest.assertions.throwables.shouldThrowAny
 import io.kotest.matchers.booleans.shouldBeTrue
 import io.kotest.matchers.should
-import io.kotest.matchers.shouldBe
 import io.kotest.matchers.string.haveSubstring
 import org.intellij.lang.annotations.Language
 import org.jetbrains.kotlinx.dataframe.AnyFrame
@@ -16,7 +15,6 @@ import java.io.File
 import java.io.File.separatorChar
 import java.io.InputStream
 
-@Suppress("ktlint:standard:backing-property-naming")
 class OpenApiTests : JupyterReplTestCase() {
 
     private val openApi = OpenApi()
@@ -415,7 +413,6 @@ class OpenApiTests : JupyterReplTestCase() {
 
         code should haveSubstring(status1Enum)
 
-        // category is a single other object, photoUrls is a primitive array, tags is a nullable array of objects
         @Language("kt")
         val petInterface = """
             @DataSchema(isOpen = false)
@@ -428,6 +425,7 @@ class OpenApiTests : JupyterReplTestCase() {
                 val status: $functionName.Status1?
                 public companion object {
         """.trimLines()
+        // category is a single other object, photoUrls is a primitive array, tags is a nullable array of objects
 
         code should haveSubstring(petInterface)
 
@@ -508,610 +506,527 @@ class OpenApiTests : JupyterReplTestCase() {
     }
 
     @Test
-    fun `Check advances code generated`() {
+    fun `Other advanced test`() {
         val fullFunctionName = ValidFieldName.of(::`Other advanced test`.name)
-        val code = openApi.readCodeForGeneration(
-            file = advancedExample,
-            name = fullFunctionName.unquoted,
-            extensionProperties = true,
-            generateHelperCompanionObject = false,
-        )
+        val functionName = fullFunctionName.quotedIfNeeded
+        val code = execGeneratedCode(advancedExample, fullFunctionName.unquoted)
             .trimLines()
 
         @Language("kt")
-        val s = """
-            interface `Other advanced test` {
-                
-                enum class EyeColor(override val value: kotlin.String) : org.jetbrains.kotlinx.dataframe.api.DataSchemaEnum {
-                    BLUE("Blue"),
-                    YELLOW("Yellow"),
-                    BROWN("Brown"),
-                    GREEN("Green");
-                }
-                @DataSchema(isOpen = false)
-                interface Pet {
-                    @ColumnName("pet_type")
-                    val petType: kotlin.String
-                    @ColumnName("value")
-                    val `value`: kotlin.Any?
-                    val name: kotlin.String
-                    val tag: kotlin.String?
-                    val other: kotlin.Any?
-                    @ColumnName("eye_color")
-                    val eyeColor: `Other advanced test`.EyeColor?
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+        val breedEnum = """
+            enum class Breed(override val value: kotlin.String) : org.jetbrains.kotlinx.dataframe.api.DataSchemaEnum {
+                DINGO("Dingo"),
+                HUSKY("Husky"),
+                RETRIEVER("Retriever"),
+                SHEPHERD("Shepherd");
+            }
+        """.trimLines()
+
+        code should haveSubstring(breedEnum)
+
+        @Language("kt")
+        val dogInterface = """
+            @DataSchema(isOpen = false)
+            interface Dog : $functionName.Pet {
+                override val tag: kotlin.String
+                val bark: kotlin.Boolean?
+                val breed: $functionName.Breed
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf()
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToPet(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Pet>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Pet> = convertTo<Pet> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<Pet> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToPet()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Pet> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToPet()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<Pet> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToPet()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Pet> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToPet()
+
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToDog(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Dog>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Dog> = convertTo<Dog> { 
+                        convertDataRowsWithOpenApi() 
+                        convertTo()
                     }
-                
-                }
-                @DataSchema(isOpen = false)
-                interface Dog : `Other advanced test`.Pet {
-                    override val tag: kotlin.String
-                    val bark: kotlin.Boolean?
-                    val breed: `Other advanced test`.Breed
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+        """.trimLines() // tag is nullable in Pet but required in Dog
+
+        code should haveSubstring(dogInterface)
+
+        @Language("kt")
+        val dogExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Dog>.bark: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("Dog_bark") get() = this["bark"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Dog>.bark: kotlin.Boolean? @JvmName("Dog_bark") get() = this["bark"] as kotlin.Boolean?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Dog?>.bark: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("NullableDog_bark") get() = this["bark"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Dog?>.bark: kotlin.Boolean? @JvmName("NullableDog_bark") get() = this["bark"] as kotlin.Boolean?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Dog>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed> @JvmName("Dog_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Dog>.breed: $functionName.Breed @JvmName("Dog_breed") get() = this["breed"] as $functionName.Breed
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Dog?>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed?> @JvmName("NullableDog_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Dog?>.breed: $functionName.Breed? @JvmName("NullableDog_breed") get() = this["breed"] as $functionName.Breed?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Dog>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Dog_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Dog>.tag: kotlin.String @JvmName("Dog_tag") get() = this["tag"] as kotlin.String
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Dog?>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableDog_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Dog?>.tag: kotlin.String? @JvmName("NullableDog_tag") get() = this["tag"] as kotlin.String?
+        """.trimLines()
+
+        code should haveSubstring(dogExtensions)
+
+        @Language("kt")
+        val breed1Enum = """
+            enum class Breed1(override val value: kotlin.String) : org.jetbrains.kotlinx.dataframe.api.DataSchemaEnum {
+                RAGDOLL("Ragdoll"),
+                SHORTHAIR("Shorthair"),
+                PERSIAN("Persian"),
+                MAINE_COON("Maine Coon"),
+                MAINE_COON_1("maine_coon"),
+                EMPTY_STRING(""),
+                `1`("1");
+            }
+        """.trimLines() // nullable enum, but taken care of in properties that use this enum
+
+        code should haveSubstring(breed1Enum)
+
+        @Language("kt")
+        val catInterface = """
+            @DataSchema(isOpen = false)
+            interface Cat : $functionName.Pet {
+                val hunts: kotlin.Boolean?
+                val age: kotlin.Float?
+                val breed: $functionName.Breed1?
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf()
                 
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToDog(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Dog>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Dog> = convertTo<Dog> { 
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToCat(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Cat>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Cat> = convertTo<Cat> { 
                           convertDataRowsWithOpenApi() 
                           convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<Dog> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToDog()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Dog> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToDog()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<Dog> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToDog()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Dog> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToDog()
                     }
-                
-                }
-                enum class Breed(override val value: kotlin.String) : org.jetbrains.kotlinx.dataframe.api.DataSchemaEnum {
-                    DINGO("Dingo"),
-                    HUSKY("Husky"),
-                    RETRIEVER("Retriever"),
-                    SHEPHERD("Shepherd");
-                }
-                @DataSchema(isOpen = false)
-                interface Cat : `Other advanced test`.Pet {
-                    val hunts: kotlin.Boolean?
-                    val age: kotlin.Float?
-                    val breed: `Other advanced test`.Breed1?
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+        """.trimLines()
+        // hunts is required but marked nullable, age is either integer or number, breed is nullable enum
+
+        code should haveSubstring(catInterface)
+
+        @Language("kt")
+        val catExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Cat>.age: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?> @JvmName("Cat_age") get() = this["age"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Cat>.age: kotlin.Float? @JvmName("Cat_age") get() = this["age"] as kotlin.Float?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Cat?>.age: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?> @JvmName("NullableCat_age") get() = this["age"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Cat?>.age: kotlin.Float? @JvmName("NullableCat_age") get() = this["age"] as kotlin.Float?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Cat>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed1?> @JvmName("Cat_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed1?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Cat>.breed: $functionName.Breed1? @JvmName("Cat_breed") get() = this["breed"] as $functionName.Breed1?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Cat?>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed1?> @JvmName("NullableCat_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Breed1?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Cat?>.breed: $functionName.Breed1? @JvmName("NullableCat_breed") get() = this["breed"] as $functionName.Breed1?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Cat>.hunts: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("Cat_hunts") get() = this["hunts"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Cat>.hunts: kotlin.Boolean? @JvmName("Cat_hunts") get() = this["hunts"] as kotlin.Boolean?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Cat?>.hunts: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("NullableCat_hunts") get() = this["hunts"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Cat?>.hunts: kotlin.Boolean? @JvmName("NullableCat_hunts") get() = this["hunts"] as kotlin.Boolean?
+        """.trimLines()
+
+        code should haveSubstring(catExtensions)
+
+        @Language("kt")
+        val eyeColorEnum = """
+            enum class EyeColor(override val value: kotlin.String) : org.jetbrains.kotlinx.dataframe.api.DataSchemaEnum {
+                BLUE("Blue"),
+                YELLOW("Yellow"),
+                BROWN("Brown"),
+                GREEN("Green");
+            }
+        """.trimLines() // nullable enum, but taken care of in properties that use this enum
+
+        code should haveSubstring(eyeColorEnum)
+
+        @Language("kt")
+        val petInterface = """
+            @DataSchema(isOpen = false)
+            interface Pet {
+                @ColumnName("pet_type")
+                val petType: kotlin.String
+                @ColumnName("value")
+                val `value`: kotlin.Any?
+                val name: kotlin.String
+                val tag: kotlin.String?
+                val other: kotlin.Any?
+                @ColumnName("eye_color")
+                val eyeColor: $functionName.EyeColor?
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf()
                 
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToCat(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Cat>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Cat> = convertTo<Cat> { 
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToPet(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Pet>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Pet> = convertTo<Pet> { 
                           convertDataRowsWithOpenApi() 
                           convertTo()
                       }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<Cat> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToCat()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Cat> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToCat()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<Cat> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToCat()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Cat> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToCat()
-                    }
-                
-                }
-                enum class Breed1(override val value: kotlin.String) : org.jetbrains.kotlinx.dataframe.api.DataSchemaEnum {
-                    RAGDOLL("Ragdoll"),
-                    SHORTHAIR("Shorthair"),
-                    PERSIAN("Persian"),
-                    MAINE_COON("Maine Coon"),
-                    MAINE_COON_1("maine_coon"),
-                    EMPTY_STRING(""),
-                    `1`("1");
-                }
-                @DataSchema(isOpen = false)
-                interface IntList {
-                    val list: kotlin.collections.List<kotlin.Int>
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+        """.trimLines()
+        // petType was named pet_type, id is either Long or String, other is not integer, eyeColor is a required but nullable enum
+
+        code should haveSubstring(petInterface)
+
+        @Language("kt")
+        val petExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("Pet_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet>.`value`: kotlin.Any? @JvmName("Pet_value") get() = this["value"] as kotlin.Any?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullablePet_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet?>.`value`: kotlin.Any? @JvmName("NullablePet_value") get() = this["value"] as kotlin.Any?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet>.eyeColor: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.EyeColor?> @JvmName("Pet_eyeColor") get() = this["eye_color"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.EyeColor?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet>.eyeColor: $functionName.EyeColor? @JvmName("Pet_eyeColor") get() = this["eye_color"] as $functionName.EyeColor?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet?>.eyeColor: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.EyeColor?> @JvmName("NullablePet_eyeColor") get() = this["eye_color"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.EyeColor?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet?>.eyeColor: $functionName.EyeColor? @JvmName("NullablePet_eyeColor") get() = this["eye_color"] as $functionName.EyeColor?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet>.name: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Pet_name") get() = this["name"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet>.name: kotlin.String @JvmName("Pet_name") get() = this["name"] as kotlin.String
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet?>.name: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullablePet_name") get() = this["name"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet?>.name: kotlin.String? @JvmName("NullablePet_name") get() = this["name"] as kotlin.String?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet>.other: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("Pet_other") get() = this["other"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet>.other: kotlin.Any? @JvmName("Pet_other") get() = this["other"] as kotlin.Any?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet?>.other: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullablePet_other") get() = this["other"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet?>.other: kotlin.Any? @JvmName("NullablePet_other") get() = this["other"] as kotlin.Any?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet>.petType: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Pet_petType") get() = this["pet_type"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet>.petType: kotlin.String @JvmName("Pet_petType") get() = this["pet_type"] as kotlin.String
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet?>.petType: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullablePet_petType") get() = this["pet_type"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet?>.petType: kotlin.String? @JvmName("NullablePet_petType") get() = this["pet_type"] as kotlin.String?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("Pet_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet>.tag: kotlin.String? @JvmName("Pet_tag") get() = this["tag"] as kotlin.String?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Pet?>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullablePet_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Pet?>.tag: kotlin.String? @JvmName("NullablePet_tag") get() = this["tag"] as kotlin.String?
+        """.trimLines()
+
+        code should haveSubstring(petExtensions)
+
+        @Language("kt")
+        val petRefTypeAlias = """
+            typealias PetRef = $functionName.Pet
+        """.trimLines() // is either Cat or Dog, we cannot merge objects, but they have the same ancestor, so Pet
+
+        code should haveSubstring(petRefTypeAlias)
+
+        @Language("kt")
+        val alsoCatTypeAlias = """
+            typealias AlsoCat = $functionName.Cat
+        """.trimLines()
+
+        code should haveSubstring(alsoCatTypeAlias)
+
+        @Language("kt")
+        val integerTypeAlias = """
+            typealias Integer = kotlin.Int
+        """.trimLines()
+
+        code should haveSubstring(integerTypeAlias)
+
+        @Language("kt")
+        val intListInterface = """
+            @DataSchema(isOpen = false)
+            interface IntList {
+                val list: kotlin.collections.List<kotlin.Int>
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf()
                 
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToIntList(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<IntList>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<IntList> = convertTo<IntList> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<IntList> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToIntList()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<IntList> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToIntList()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<IntList> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToIntList()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<IntList> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToIntList()
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToIntList(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<IntList>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<IntList> = convertTo<IntList> { 
+                        convertDataRowsWithOpenApi() 
+                        convertTo()
                     }
-                
-                }
-                @DataSchema(isOpen = false)
-                interface ObjectWithAdditionalProperties : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.String> {
-                    @ColumnName("value")
-                    override val `value`: kotlin.String
-                    override val key: kotlin.String
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+        """.trimLines() // array of primitives, so list int
+
+        code should haveSubstring(intListInterface)
+
+        @Language("kt")
+        val intListExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.IntList>.list: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>> @JvmName("IntList_list") get() = this["list"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.IntList>.list: kotlin.collections.List<kotlin.Int> @JvmName("IntList_list") get() = this["list"] as kotlin.collections.List<kotlin.Int>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.IntList?>.list: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>?> @JvmName("NullableIntList_list") get() = this["list"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.IntList?>.list: kotlin.collections.List<kotlin.Int>? @JvmName("NullableIntList_list") get() = this["list"] as kotlin.collections.List<kotlin.Int>?
+        """.trimLines()
+
+        code should haveSubstring(intListExtensions)
+
+        @Language("kt")
+        val objectWithAdditionalPropertiesInterface = """
+            @DataSchema(isOpen = false)
+            interface ObjectWithAdditionalProperties : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.String> {
+                @ColumnName("value")
+                override val `value`: kotlin.String
+                override val key: kotlin.String
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf(JsonPath(""${'"'}${'$'}""${'"'}))
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditionalProperties(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditionalProperties>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditionalProperties> = convertTo<ObjectWithAdditionalProperties> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditionalProperties> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditionalProperties()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditionalProperties> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditionalProperties()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditionalProperties> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditionalProperties()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditionalProperties> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditionalProperties()
-                    }
-                
-                }
-                enum class Op(override val value: kotlin.String) : org.jetbrains.kotlinx.dataframe.api.DataSchemaEnum {
-                    ADD("add"),
-                    REMOVE("remove"),
-                    REPLACE("replace");
-                }
-                @DataSchema(isOpen = false)
-                interface Value {
-                
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
-                        get() = listOf()
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToValue(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Value>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Value> = convertTo<Value> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<Value> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToValue()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Value> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToValue()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<Value> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToValue()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Value> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToValue()
+                    
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditionalProperties(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditionalProperties>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditionalProperties> = convertTo<ObjectWithAdditionalProperties> {
+                        convertDataRowsWithOpenApi()
+                        convertTo()
                     }
-                
-                }
-                @DataSchema(isOpen = false)
-                interface ObjectWithAdditional : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.Int> {
-                    @ColumnName("value")
-                    override val `value`: kotlin.Int
-                    override val key: kotlin.String
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+                    
+                    public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditionalProperties> = org.jetbrains.kotlinx.dataframe.DataFrame
+                        .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
+                        .convertToObjectWithAdditionalProperties()
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditionalPropertiesInterface)
+
+        @Language("kt")
+        val objectWithAdditionalPropertiesExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditionalProperties>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("ObjectWithAdditionalProperties_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditionalProperties>.`value`: kotlin.String @JvmName("ObjectWithAdditionalProperties_value") get() = this["value"] as kotlin.String
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditionalProperties?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableObjectWithAdditionalProperties_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditionalProperties?>.`value`: kotlin.String? @JvmName("NullableObjectWithAdditionalProperties_value") get() = this["value"] as kotlin.String?
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditionalPropertiesExtensions)
+
+        @Language("kt")
+        val objectWithAdditional2Interface = """
+            @DataSchema(isOpen = false)
+            interface ObjectWithAdditional2 : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.Any> {
+                @ColumnName("value")
+                override val `value`: kotlin.Any
+                override val key: kotlin.String
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf(JsonPath(""${'"'}${'$'}""${'"'}))
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditional(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditional>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional> = convertTo<ObjectWithAdditional> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional()
+                    
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditional2(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditional2>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional2> = convertTo<ObjectWithAdditional2> {
+                        convertDataRowsWithOpenApi()
+                        convertTo()
                     }
-                
-                }
-                @DataSchema(isOpen = false)
-                interface SomeArrayContent {
-                    val op: `Other advanced test`.Op
-                    val path: kotlin.String
-                    @ColumnName("value")
-                    val `value`: `Other advanced test`.Value?
-                    val objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?>
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
-                        get() = listOf(JsonPath(""${'"'}${'$'}["objectWithAdditional"]""${'"'}))
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToSomeArrayContent(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<SomeArrayContent>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<SomeArrayContent> = convertTo<SomeArrayContent> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<SomeArrayContent> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToSomeArrayContent()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<SomeArrayContent> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToSomeArrayContent()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<SomeArrayContent> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToSomeArrayContent()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<SomeArrayContent> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToSomeArrayContent()
+                    
+                    public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional2> = org.jetbrains.kotlinx.dataframe.DataFrame
+                        .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
+                        .convertToObjectWithAdditional2()
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditional2Interface)
+
+        @Language("kt")
+        val objectWithAdditional2Extensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditional2>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any> @JvmName("ObjectWithAdditional2_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditional2>.`value`: kotlin.Any @JvmName("ObjectWithAdditional2_value") get() = this["value"] as kotlin.Any
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditional2?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullableObjectWithAdditional2_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditional2?>.`value`: kotlin.Any? @JvmName("NullableObjectWithAdditional2_value") get() = this["value"] as kotlin.Any?
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditional2Extensions)
+
+        @Language("kt")
+        val objectWithAdditional3Interface = """
+            @DataSchema(isOpen = false)
+            interface ObjectWithAdditional3 : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.Any?> {
+                @ColumnName("value")
+                override val `value`: kotlin.Any?
+                override val key: kotlin.String
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+                        get() = listOf(JsonPath(""${'"'}${'$'}""${'"'}))
+                    
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditional3(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditional3>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional3> = convertTo<ObjectWithAdditional3> {
+                        convertDataRowsWithOpenApi()
+                        convertTo()
                     }
-                
-                }
-                @DataSchema(isOpen = false)
-                interface Error {
-                    val ints: `Other advanced test`.IntList?
-                    val petRef: PetRef
-                    val pets: org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>
-                    val code: kotlin.Int
-                    val message: kotlin.String
-                    val objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>
-                    val objectWithAdditionalList: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>?
-                    val objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?>
-                    val objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3>
-                    val array: kotlin.collections.List<SomeArrayArray>?
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+                    
+                    public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional3> = org.jetbrains.kotlinx.dataframe.DataFrame
+                        .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
+                        .convertToObjectWithAdditional3()
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditional3Interface)
+
+        @Language("kt")
+        val objectWithAdditional3Extensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditional3>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("ObjectWithAdditional3_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditional3>.`value`: kotlin.Any? @JvmName("ObjectWithAdditional3_value") get() = this["value"] as kotlin.Any?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditional3?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullableObjectWithAdditional3_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditional3?>.`value`: kotlin.Any? @JvmName("NullableObjectWithAdditional3_value") get() = this["value"] as kotlin.Any?
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditional3Extensions)
+
+        // TODO broke PetRef?
+        @Language("kt")
+        val errorInterface = """
+            @DataSchema(isOpen = false)
+            interface Error {
+                val ints: $functionName.IntList?
+                val petRef: PetRef
+                val pets: org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>
+                val code: kotlin.Int
+                val message: kotlin.String
+                val objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>
+                val objectWithAdditionalList: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>?
+                val objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?>
+                val objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3>
+                val array: kotlin.collections.List<SomeArrayArray>?
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf(JsonPath(""${'"'}${'$'}["objectWithAdditional"]""${'"'}), JsonPath(""${'"'}${'$'}["objectWithAdditionalList"][*]""${'"'}), JsonPath(""${'"'}${'$'}["objectWithAdditional2"]""${'"'}), JsonPath(""${'"'}${'$'}["objectWithAdditional3"]""${'"'}), JsonPath(""${'"'}${'$'}["array"][*][*][*]["objectWithAdditional"]""${'"'}))
                 
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToError(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Error>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Error> = convertTo<Error> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<Error> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToError()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Error> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToError()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<Error> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToError()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<Error> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToError()
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToError(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<Error>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<Error> = convertTo<Error> {
+                        convertDataRowsWithOpenApi()
+                        convertTo()
                     }
-                
-                }
-                @DataSchema(isOpen = false)
-                interface ObjectWithAdditional2 : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.Any> {
-                    @ColumnName("value")
-                    override val `value`: kotlin.Any
-                    override val key: kotlin.String
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+        """.trimLines()
+
+        code should haveSubstring(errorInterface)
+
+        @Language("kt")
+        val errorExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.array: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?> @JvmName("Error_array") get() = this["array"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.array: kotlin.collections.List<SomeArrayArray>? @JvmName("Error_array") get() = this["array"] as kotlin.collections.List<SomeArrayArray>?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.array: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?> @JvmName("NullableError_array") get() = this["array"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.array: kotlin.collections.List<SomeArrayArray>? @JvmName("NullableError_array") get() = this["array"] as kotlin.collections.List<SomeArrayArray>?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.code: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int> @JvmName("Error_code") get() = this["code"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.code: kotlin.Int @JvmName("Error_code") get() = this["code"] as kotlin.Int
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.code: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?> @JvmName("NullableError_code") get() = this["code"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.code: kotlin.Int? @JvmName("NullableError_code") get() = this["code"] as kotlin.Int?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.ints: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.IntList?> @JvmName("Error_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.IntList?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.ints: org.jetbrains.kotlinx.dataframe.DataRow<$functionName.IntList?> @JvmName("Error_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.DataRow<$functionName.IntList?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.ints: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.IntList?> @JvmName("NullableError_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.IntList?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.ints: org.jetbrains.kotlinx.dataframe.DataRow<$functionName.IntList?> @JvmName("NullableError_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.DataRow<$functionName.IntList?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.message: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Error_message") get() = this["message"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.message: kotlin.String @JvmName("Error_message") get() = this["message"] as kotlin.String
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.message: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableError_message") get() = this["message"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.message: kotlin.String? @JvmName("NullableError_message") get() = this["message"] as kotlin.String?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>> @JvmName("Error_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties> @JvmName("Error_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties?>> @JvmName("NullableError_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties?> @JvmName("NullableError_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?>> @JvmName("Error_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?> @JvmName("Error_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?>> @JvmName("NullableError_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?> @JvmName("NullableError_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional2?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3>> @JvmName("Error_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3> @JvmName("Error_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3?>> @JvmName("NullableError_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3?> @JvmName("NullableError_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional3?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.objectWithAdditionalList: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>?> @JvmName("Error_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.objectWithAdditionalList: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>? @JvmName("Error_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.objectWithAdditionalList: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>?> @JvmName("NullableError_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.objectWithAdditionalList: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>? @JvmName("NullableError_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditionalProperties>>?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.petRef: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef> @JvmName("Error_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.petRef: org.jetbrains.kotlinx.dataframe.DataRow<PetRef> @JvmName("Error_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.DataRow<PetRef>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.petRef: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef?> @JvmName("NullableError_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.petRef: org.jetbrains.kotlinx.dataframe.DataRow<PetRef?> @JvmName("NullableError_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.DataRow<PetRef?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error>.pets: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>> @JvmName("Error_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error>.pets: org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?> @JvmName("Error_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.Error?>.pets: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>> @JvmName("NullableError_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Error?>.pets: org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?> @JvmName("NullableError_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>
+        """.trimLines()
+
+        code should haveSubstring(errorExtensions)
+
+        @Language("kt")
+        val valueInterface = """
+            @DataSchema(isOpen = false)
+            interface Value
+        """.trimLines()
+
+        code should haveSubstring(valueInterface)
+
+        @Language("kt")
+        val objectWithAdditionalInterface = """
+            @DataSchema(isOpen = false)
+            interface ObjectWithAdditional : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.Int> {
+                @ColumnName("value")
+                override val `value`: kotlin.Int
+                override val key: kotlin.String
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf(JsonPath(""${'"'}${'$'}""${'"'}))
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditional2(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditional2>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional2> = convertTo<ObjectWithAdditional2> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional2> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional2()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional2> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional2()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional2> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional2()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional2> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional2()
+                    
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditional(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditional>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional> = convertTo<ObjectWithAdditional> {
+                        convertDataRowsWithOpenApi()
+                        convertTo()
                     }
+                    
+                    public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional> = org.jetbrains.kotlinx.dataframe.DataFrame
+                        .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
+                        .convertToObjectWithAdditional()
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditionalInterface)
+
+        @Language("kt")
+        val objectWithAdditionalExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditional>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int> @JvmName("ObjectWithAdditional_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditional>.`value`: kotlin.Int @JvmName("ObjectWithAdditional_value") get() = this["value"] as kotlin.Int
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ObjectWithAdditional?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?> @JvmName("NullableObjectWithAdditional_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ObjectWithAdditional?>.`value`: kotlin.Int? @JvmName("NullableObjectWithAdditional_value") get() = this["value"] as kotlin.Int?
+        """.trimLines()
+
+        code should haveSubstring(objectWithAdditionalExtensions)
+
+        @Language("kt")
+        val someArrayContentInterface = """
+            @DataSchema(isOpen = false)
+            interface SomeArrayContent {
+                val op: $functionName.Op
+                val path: kotlin.String
+                @ColumnName("value")
+                val `value`: $functionName.Value?
+                val objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?>
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+                        get() = listOf(JsonPath(""${'"'}${'$'}["objectWithAdditional"]""${'"'}))
                 
-                }
-                @DataSchema(isOpen = false)
-                interface ObjectWithAdditional3 : org.jetbrains.kotlinx.dataframe.io.AdditionalProperty<kotlin.Any?> {
-                    @ColumnName("value")
-                    override val `value`: kotlin.Any?
-                    override val key: kotlin.String
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
-                        get() = listOf(JsonPath(""${'"'}${'$'}""${'"'}))
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToObjectWithAdditional3(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ObjectWithAdditional3>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional3> = convertTo<ObjectWithAdditional3> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional3> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional3()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional3> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional3()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional3> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional3()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ObjectWithAdditional3> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)["value"].first().let { it as DataFrame<*> }
-                          .convertToObjectWithAdditional3()
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToSomeArrayContent(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<SomeArrayContent>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<SomeArrayContent> = convertTo<SomeArrayContent> {
+                        convertDataRowsWithOpenApi()
+                        convertTo()
                     }
-                
-                }
-                @DataSchema(isOpen = false)
-                interface ErrorHolder {
-                    val errors: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error>
-                    public companion object {
-                      public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
+                    
+                    public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<SomeArrayContent> = org.jetbrains.kotlinx.dataframe.DataFrame
+                        .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
+                        .convertToSomeArrayContent()
+        """.trimLines()
+
+        code should haveSubstring(someArrayContentInterface)
+
+        @Language("kt")
+        val someArrayContentExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent>.`value`: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.Value?> @JvmName("SomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.Value?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent>.`value`: org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Value?> @JvmName("SomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Value?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent?>.`value`: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.Value?> @JvmName("NullableSomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<$functionName.Value?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent?>.`value`: org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Value?> @JvmName("NullableSomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataRow<$functionName.Value?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?>> @JvmName("SomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?> @JvmName("SomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?>> @JvmName("NullableSomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?> @JvmName("NullableSomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.ObjectWithAdditional?>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent>.op: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Op> @JvmName("SomeArrayContent_op") get() = this["op"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Op>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent>.op: $functionName.Op @JvmName("SomeArrayContent_op") get() = this["op"] as $functionName.Op
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent?>.op: org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Op?> @JvmName("NullableSomeArrayContent_op") get() = this["op"] as org.jetbrains.kotlinx.dataframe.DataColumn<$functionName.Op?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent?>.op: $functionName.Op? @JvmName("NullableSomeArrayContent_op") get() = this["op"] as $functionName.Op?
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent>.path: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("SomeArrayContent_path") get() = this["path"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent>.path: kotlin.String @JvmName("SomeArrayContent_path") get() = this["path"] as kotlin.String
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.SomeArrayContent?>.path: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableSomeArrayContent_path") get() = this["path"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.SomeArrayContent?>.path: kotlin.String? @JvmName("NullableSomeArrayContent_path") get() = this["path"] as kotlin.String?
+        """.trimLines()
+
+        code should haveSubstring(someArrayContentExtensions)
+
+        @Language("kt")
+        val someArrayTypeAlias = """
+            typealias SomeArray = org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.SomeArrayContent>
+        """.trimLines()
+
+        code should haveSubstring(someArrayTypeAlias)
+
+        @Language("kt")
+        val errorHolderInterface = """
+            @DataSchema(isOpen = false)
+            interface ErrorHolder {
+                val errors: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error>
+                public companion object {
+                    public val keyValuePaths: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.api.JsonPath>
                         get() = listOf(JsonPath(""${'"'}${'$'}["errors"][*]["objectWithAdditional"]""${'"'}), JsonPath(""${'"'}${'$'}["errors"][*]["objectWithAdditionalList"][*]""${'"'}), JsonPath(""${'"'}${'$'}["errors"][*]["objectWithAdditional2"]""${'"'}), JsonPath(""${'"'}${'$'}["errors"][*]["objectWithAdditional3"]""${'"'}), JsonPath(""${'"'}${'$'}["errors"][*]["array"][*][*][*]["objectWithAdditional"]""${'"'}))
-                
-                      public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToErrorHolder(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ErrorHolder>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ErrorHolder> = convertTo<ErrorHolder> { 
-                          convertDataRowsWithOpenApi() 
-                          convertTo()
-                      }
-                
-                      public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ErrorHolder> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToErrorHolder()
-                
-                      public fun readJson(path: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ErrorHolder> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(path, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToErrorHolder()
-                
-                      public fun readJson(stream: java.io.InputStream): org.jetbrains.kotlinx.dataframe.DataFrame<ErrorHolder> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJson(stream, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToErrorHolder()
-                
-                      public fun readJsonStr(text: kotlin.String): org.jetbrains.kotlinx.dataframe.DataFrame<ErrorHolder> = org.jetbrains.kotlinx.dataframe.DataFrame
-                          .readJsonStr(text, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
-                          .convertToErrorHolder()
+                    
+                    public fun org.jetbrains.kotlinx.dataframe.DataFrame<*>.convertToErrorHolder(convertTo: org.jetbrains.kotlinx.dataframe.api.ConvertSchemaDsl<ErrorHolder>.() -> kotlin.Unit = {}): org.jetbrains.kotlinx.dataframe.DataFrame<ErrorHolder> = convertTo<ErrorHolder> {
+                        convertDataRowsWithOpenApi()
+                        convertTo()
                     }
-                
-                }
-            }
-            typealias PetRef = `Other advanced test`.Pet
-            typealias AlsoCat = `Other advanced test`.Cat
-            typealias Integer = kotlin.Int
-            typealias SomeArray = org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.SomeArrayContent>
-            typealias SomeArrayArray = kotlin.collections.List<SomeArray>
-
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("Pet_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet>.`value`: kotlin.Any? @JvmName("Pet_value") get() = this["value"] as kotlin.Any?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullablePet_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet?>.`value`: kotlin.Any? @JvmName("NullablePet_value") get() = this["value"] as kotlin.Any?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet>.eyeColor: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.EyeColor?> @JvmName("Pet_eyeColor") get() = this["eye_color"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.EyeColor?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet>.eyeColor: `Other advanced test`.EyeColor? @JvmName("Pet_eyeColor") get() = this["eye_color"] as `Other advanced test`.EyeColor?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet?>.eyeColor: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.EyeColor?> @JvmName("NullablePet_eyeColor") get() = this["eye_color"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.EyeColor?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet?>.eyeColor: `Other advanced test`.EyeColor? @JvmName("NullablePet_eyeColor") get() = this["eye_color"] as `Other advanced test`.EyeColor?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet>.name: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Pet_name") get() = this["name"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet>.name: kotlin.String @JvmName("Pet_name") get() = this["name"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet?>.name: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullablePet_name") get() = this["name"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet?>.name: kotlin.String? @JvmName("NullablePet_name") get() = this["name"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet>.other: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("Pet_other") get() = this["other"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet>.other: kotlin.Any? @JvmName("Pet_other") get() = this["other"] as kotlin.Any?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet?>.other: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullablePet_other") get() = this["other"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet?>.other: kotlin.Any? @JvmName("NullablePet_other") get() = this["other"] as kotlin.Any?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet>.petType: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Pet_petType") get() = this["pet_type"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet>.petType: kotlin.String @JvmName("Pet_petType") get() = this["pet_type"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet?>.petType: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullablePet_petType") get() = this["pet_type"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet?>.petType: kotlin.String? @JvmName("NullablePet_petType") get() = this["pet_type"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("Pet_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet>.tag: kotlin.String? @JvmName("Pet_tag") get() = this["tag"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Pet?>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullablePet_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Pet?>.tag: kotlin.String? @JvmName("NullablePet_tag") get() = this["tag"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Dog>.bark: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("Dog_bark") get() = this["bark"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Dog>.bark: kotlin.Boolean? @JvmName("Dog_bark") get() = this["bark"] as kotlin.Boolean?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Dog?>.bark: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("NullableDog_bark") get() = this["bark"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Dog?>.bark: kotlin.Boolean? @JvmName("NullableDog_bark") get() = this["bark"] as kotlin.Boolean?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Dog>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed> @JvmName("Dog_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Dog>.breed: `Other advanced test`.Breed @JvmName("Dog_breed") get() = this["breed"] as `Other advanced test`.Breed
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Dog?>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed?> @JvmName("NullableDog_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Dog?>.breed: `Other advanced test`.Breed? @JvmName("NullableDog_breed") get() = this["breed"] as `Other advanced test`.Breed?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Dog>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Dog_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Dog>.tag: kotlin.String @JvmName("Dog_tag") get() = this["tag"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Dog?>.tag: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableDog_tag") get() = this["tag"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Dog?>.tag: kotlin.String? @JvmName("NullableDog_tag") get() = this["tag"] as kotlin.String?
-
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Cat>.age: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?> @JvmName("Cat_age") get() = this["age"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Cat>.age: kotlin.Float? @JvmName("Cat_age") get() = this["age"] as kotlin.Float?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Cat?>.age: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?> @JvmName("NullableCat_age") get() = this["age"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Float?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Cat?>.age: kotlin.Float? @JvmName("NullableCat_age") get() = this["age"] as kotlin.Float?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Cat>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed1?> @JvmName("Cat_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed1?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Cat>.breed: `Other advanced test`.Breed1? @JvmName("Cat_breed") get() = this["breed"] as `Other advanced test`.Breed1?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Cat?>.breed: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed1?> @JvmName("NullableCat_breed") get() = this["breed"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Breed1?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Cat?>.breed: `Other advanced test`.Breed1? @JvmName("NullableCat_breed") get() = this["breed"] as `Other advanced test`.Breed1?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Cat>.hunts: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("Cat_hunts") get() = this["hunts"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Cat>.hunts: kotlin.Boolean? @JvmName("Cat_hunts") get() = this["hunts"] as kotlin.Boolean?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Cat?>.hunts: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?> @JvmName("NullableCat_hunts") get() = this["hunts"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Boolean?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Cat?>.hunts: kotlin.Boolean? @JvmName("NullableCat_hunts") get() = this["hunts"] as kotlin.Boolean?
-
-
-
-
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.IntList>.list: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>> @JvmName("IntList_list") get() = this["list"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.IntList>.list: kotlin.collections.List<kotlin.Int> @JvmName("IntList_list") get() = this["list"] as kotlin.collections.List<kotlin.Int>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.IntList?>.list: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>?> @JvmName("NullableIntList_list") get() = this["list"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<kotlin.Int>?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.IntList?>.list: kotlin.collections.List<kotlin.Int>? @JvmName("NullableIntList_list") get() = this["list"] as kotlin.collections.List<kotlin.Int>?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditionalProperties>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("ObjectWithAdditionalProperties_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditionalProperties>.`value`: kotlin.String @JvmName("ObjectWithAdditionalProperties_value") get() = this["value"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditionalProperties?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableObjectWithAdditionalProperties_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditionalProperties?>.`value`: kotlin.String? @JvmName("NullableObjectWithAdditionalProperties_value") get() = this["value"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditionalProperties>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("ObjectWithAdditionalProperties_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditionalProperties>.key: kotlin.String @JvmName("ObjectWithAdditionalProperties_key") get() = this["key"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditionalProperties?>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableObjectWithAdditionalProperties_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditionalProperties?>.key: kotlin.String? @JvmName("NullableObjectWithAdditionalProperties_key") get() = this["key"] as kotlin.String?
-
-
-
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int> @JvmName("ObjectWithAdditional_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional>.`value`: kotlin.Int @JvmName("ObjectWithAdditional_value") get() = this["value"] as kotlin.Int
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?> @JvmName("NullableObjectWithAdditional_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional?>.`value`: kotlin.Int? @JvmName("NullableObjectWithAdditional_value") get() = this["value"] as kotlin.Int?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("ObjectWithAdditional_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional>.key: kotlin.String @JvmName("ObjectWithAdditional_key") get() = this["key"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional?>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableObjectWithAdditional_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional?>.key: kotlin.String? @JvmName("NullableObjectWithAdditional_key") get() = this["key"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent>.`value`: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.Value?> @JvmName("SomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.Value?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent>.`value`: org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Value?> @JvmName("SomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Value?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent?>.`value`: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.Value?> @JvmName("NullableSomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.Value?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent?>.`value`: org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Value?> @JvmName("NullableSomeArrayContent_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Value?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?>> @JvmName("SomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?> @JvmName("SomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?>> @JvmName("NullableSomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?> @JvmName("NullableSomeArrayContent_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent>.op: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Op> @JvmName("SomeArrayContent_op") get() = this["op"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Op>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent>.op: `Other advanced test`.Op @JvmName("SomeArrayContent_op") get() = this["op"] as `Other advanced test`.Op
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent?>.op: org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Op?> @JvmName("NullableSomeArrayContent_op") get() = this["op"] as org.jetbrains.kotlinx.dataframe.DataColumn<`Other advanced test`.Op?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent?>.op: `Other advanced test`.Op? @JvmName("NullableSomeArrayContent_op") get() = this["op"] as `Other advanced test`.Op?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent>.path: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("SomeArrayContent_path") get() = this["path"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent>.path: kotlin.String @JvmName("SomeArrayContent_path") get() = this["path"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.SomeArrayContent?>.path: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableSomeArrayContent_path") get() = this["path"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.SomeArrayContent?>.path: kotlin.String? @JvmName("NullableSomeArrayContent_path") get() = this["path"] as kotlin.String?
-
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.array: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?> @JvmName("Error_array") get() = this["array"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.array: kotlin.collections.List<SomeArrayArray>? @JvmName("Error_array") get() = this["array"] as kotlin.collections.List<SomeArrayArray>?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.array: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?> @JvmName("NullableError_array") get() = this["array"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<SomeArrayArray>?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.array: kotlin.collections.List<SomeArrayArray>? @JvmName("NullableError_array") get() = this["array"] as kotlin.collections.List<SomeArrayArray>?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.code: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int> @JvmName("Error_code") get() = this["code"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.code: kotlin.Int @JvmName("Error_code") get() = this["code"] as kotlin.Int
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.code: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?> @JvmName("NullableError_code") get() = this["code"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Int?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.code: kotlin.Int? @JvmName("NullableError_code") get() = this["code"] as kotlin.Int?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.ints: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.IntList?> @JvmName("Error_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.IntList?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.ints: org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.IntList?> @JvmName("Error_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.IntList?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.ints: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.IntList?> @JvmName("NullableError_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<`Other advanced test`.IntList?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.ints: org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.IntList?> @JvmName("NullableError_ints") get() = this["ints"] as org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.IntList?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.message: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("Error_message") get() = this["message"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.message: kotlin.String @JvmName("Error_message") get() = this["message"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.message: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableError_message") get() = this["message"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.message: kotlin.String? @JvmName("NullableError_message") get() = this["message"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>> @JvmName("Error_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties> @JvmName("Error_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties?>> @JvmName("NullableError_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.objectWithAdditional: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties?> @JvmName("NullableError_objectWithAdditional") get() = this["objectWithAdditional"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?>> @JvmName("Error_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?> @JvmName("Error_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?>> @JvmName("NullableError_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.objectWithAdditional2: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?> @JvmName("NullableError_objectWithAdditional2") get() = this["objectWithAdditional2"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional2?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3>> @JvmName("Error_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3> @JvmName("Error_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3?>> @JvmName("NullableError_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.objectWithAdditional3: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3?> @JvmName("NullableError_objectWithAdditional3") get() = this["objectWithAdditional3"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditional3?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.objectWithAdditionalList: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>?> @JvmName("Error_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.objectWithAdditionalList: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>? @JvmName("Error_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.objectWithAdditionalList: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>?> @JvmName("NullableError_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.objectWithAdditionalList: kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>? @JvmName("NullableError_objectWithAdditionalList") get() = this["objectWithAdditionalList"] as kotlin.collections.List<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.ObjectWithAdditionalProperties>>?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.petRef: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef> @JvmName("Error_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.petRef: org.jetbrains.kotlinx.dataframe.DataRow<PetRef> @JvmName("Error_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.DataRow<PetRef>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.petRef: org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef?> @JvmName("NullableError_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.columns.ColumnGroup<PetRef?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.petRef: org.jetbrains.kotlinx.dataframe.DataRow<PetRef?> @JvmName("NullableError_petRef") get() = this["petRef"] as org.jetbrains.kotlinx.dataframe.DataRow<PetRef?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error>.pets: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>> @JvmName("Error_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error>.pets: org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?> @JvmName("Error_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.Error?>.pets: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>> @JvmName("NullableError_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.Error?>.pets: org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?> @JvmName("NullableError_pets") get() = this["pets"] as org.jetbrains.kotlinx.dataframe.DataFrame<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional2>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any> @JvmName("ObjectWithAdditional2_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional2>.`value`: kotlin.Any @JvmName("ObjectWithAdditional2_value") get() = this["value"] as kotlin.Any
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional2?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullableObjectWithAdditional2_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional2?>.`value`: kotlin.Any? @JvmName("NullableObjectWithAdditional2_value") get() = this["value"] as kotlin.Any?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional2>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("ObjectWithAdditional2_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional2>.key: kotlin.String @JvmName("ObjectWithAdditional2_key") get() = this["key"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional2?>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableObjectWithAdditional2_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional2?>.key: kotlin.String? @JvmName("NullableObjectWithAdditional2_key") get() = this["key"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional3>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("ObjectWithAdditional3_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional3>.`value`: kotlin.Any? @JvmName("ObjectWithAdditional3_value") get() = this["value"] as kotlin.Any?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional3?>.`value`: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?> @JvmName("NullableObjectWithAdditional3_value") get() = this["value"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.Any?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional3?>.`value`: kotlin.Any? @JvmName("NullableObjectWithAdditional3_value") get() = this["value"] as kotlin.Any?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional3>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String> @JvmName("ObjectWithAdditional3_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional3>.key: kotlin.String @JvmName("ObjectWithAdditional3_key") get() = this["key"] as kotlin.String
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ObjectWithAdditional3?>.key: org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?> @JvmName("NullableObjectWithAdditional3_key") get() = this["key"] as org.jetbrains.kotlinx.dataframe.DataColumn<kotlin.String?>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ObjectWithAdditional3?>.key: kotlin.String? @JvmName("NullableObjectWithAdditional3_key") get() = this["key"] as kotlin.String?
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ErrorHolder>.errors: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error>> @JvmName("ErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ErrorHolder>.errors: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error> @JvmName("ErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error>
-            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<`Other advanced test`.ErrorHolder?>.errors: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error?>> @JvmName("NullableErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error?>>
-            val org.jetbrains.kotlinx.dataframe.DataRow<`Other advanced test`.ErrorHolder?>.errors: org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error?> @JvmName("NullableErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataFrame<`Other advanced test`.Error?>
+                    
+                    public fun readJson(url: java.net.URL): org.jetbrains.kotlinx.dataframe.DataFrame<ErrorHolder> = org.jetbrains.kotlinx.dataframe.DataFrame
+                        .readJson(url, typeClashTactic = ANY_COLUMNS, keyValuePaths = keyValuePaths)
+                        .convertToErrorHolder()
         """.trimLines()
 
-        code shouldBe s
-    }
+        code should haveSubstring(errorHolderInterface)
 
-    @Test
-    fun `Other advanced test`() {
-        val fullFunctionName = ValidFieldName.of(::`Other advanced test`.name)
-        val functionName = fullFunctionName.quotedIfNeeded
-        val code = execGeneratedCode(advancedExample, fullFunctionName.unquoted)
-            .trimLines()
+        @Language("kt")
+        val errorHolderExtensions = """
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ErrorHolder>.errors: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error>> @JvmName("ErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ErrorHolder>.errors: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error> @JvmName("ErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error>
+            val org.jetbrains.kotlinx.dataframe.ColumnsContainer<$functionName.ErrorHolder?>.errors: org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error?>> @JvmName("NullableErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataColumn<org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error?>>
+            val org.jetbrains.kotlinx.dataframe.DataRow<$functionName.ErrorHolder?>.errors: org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error?> @JvmName("NullableErrorHolder_errors") get() = this["errors"] as org.jetbrains.kotlinx.dataframe.DataFrame<$functionName.Error?>
+        """.trimLines()
+
+        code should haveSubstring(errorHolderExtensions)
 
         @Language("kt")
         val res1 = execRaw(
@@ -1197,6 +1112,7 @@ class OpenApiTests : JupyterReplTestCase() {
         df2.isNotEmpty().shouldBeTrue()
     }
 
+    @Suppress("LocalVariableName")
     @Test
     fun `Jupyter importDataSchema`() {
         val filePath = apiGuruYaml.absolutePath.let {
@@ -1207,7 +1123,7 @@ class OpenApiTests : JupyterReplTestCase() {
             }
         }
 
-        @Language("kts")
+        @Language("kt")
         val _1 = execRaw(
             """
             val ApiGuru = importDataSchema(File("$filePath"))
@@ -1216,7 +1132,7 @@ class OpenApiTests : JupyterReplTestCase() {
 
         val apiGuruDataTripleQuote = "\"\"\"${apiGuruData.replace("$", "\${'$'}")}\"\"\""
 
-        @Language("kts")
+        @Language("kt")
         val _2 = execRaw(
             """
             val df = ApiGuru.APIs.readJsonStr($apiGuruDataTripleQuote)
@@ -1226,7 +1142,7 @@ class OpenApiTests : JupyterReplTestCase() {
 
         println(_2)
 
-        @Language("kts")
+        @Language("kt")
         val _3 = execRaw(
             """
             df.filter {
@@ -1236,6 +1152,17 @@ class OpenApiTests : JupyterReplTestCase() {
             }
             """.trimIndent(),
         ) as AnyFrame
+
+        @Language("kt")
+        val _4 = execRaw(
+            """
+            ApiGuru.APIs.readJsonStr($apiGuruDataTripleQuote).filter {
+              value.versions.value.any {
+                (updated ?: added).year >= 2021
+              }
+            }
+            """.trimIndent(),
+        ) as AnyFrame
     }
 
     private fun String.trimLines(): String = trim().removeSurrounding("\n").lines().joinToString("\n") { it.trim() }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 8758fc62aa..3d63c1fab1 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,11 +1,11 @@
 [versions]
 ksp = "2.0.20-1.0.24"
-kotlinJupyter = "0.12.0-139"
+kotlinJupyter = "0.12.0-383"
 
 ktlint = "12.1.2"
 
 # make sure to sync both manually with :generator module
-kotlin = "2.0.20"
+kotlin = "2.0.20" # needs jupyter compatibility with Kotlin 2.1 to update
 kotlinpoet = "1.18.1"
 
 dokka = "1.9.20"
@@ -16,7 +16,7 @@ libsPublisher = "1.9.23-dev-45"
 dataframe = "0.16.0-dev-5772"
 korro = "0.1.6"
 
-binaryCompatibilityValidator = "0.16.3"
+binaryCompatibilityValidator = "0.17.0"
 kover = "0.8.3"
 deephavenCsv = "0.15.0"
 fastDoubleParser = "2.0.1"
@@ -40,19 +40,17 @@ sl4j = "2.0.16"
 junit = "4.13.2"
 junit-jupiter = "5.11.3"
 junit-platform = "1.11.3"
-
-# TODO 5.8.0 is not possible due to https://github.com/Kotlin/dataframe/issues/595
-kotestAsserions = "5.5.4"
+kotestAsserions = "6.0.0.M1"
 
 jsoup = "1.18.3"
 arrow = "18.1.0"
 kodex = "0.4.2"
-simpleGit = "2.0.3" # Can't be updated to 2.1.0+ due to Java 8 compatibility
+simpleGit = "2.2.1"
 dependencyVersions = "0.51.0"
 plugin-publish = "1.3.0"
 shadow = "8.3.5"
-android-gradle-api = "7.3.1" # Can't be updated to 7.4.0+ due to Java 8 compatibility
-ktor = "3.0.1"
+android-gradle-api = "7.3.1" # need to revise our tests to update
+ktor = "3.0.1" # needs jupyter compatibility with Kotlin 2.1 to update
 kotlin-compile-testing = "1.6.0"
 duckdb = "1.1.3"
 buildconfig = "5.5.1"
diff --git a/plugins/keywords-generator/build.gradle.kts b/plugins/keywords-generator/build.gradle.kts
index 9a6724724c..efc0369968 100644
--- a/plugins/keywords-generator/build.gradle.kts
+++ b/plugins/keywords-generator/build.gradle.kts
@@ -1,3 +1,6 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     `java-gradle-plugin`
     `kotlin-dsl`
@@ -22,6 +25,20 @@ dependencies {
     implementation("com.squareup:kotlinpoet:$kotlinPoetVersion")
 }
 
+kotlin {
+    jvmToolchain(21)
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_11
+        freeCompilerArgs.add("-Xjdk-release=11")
+    }
+}
+
+tasks.withType<JavaCompile> {
+    sourceCompatibility = JavaVersion.VERSION_11.toString()
+    targetCompatibility = JavaVersion.VERSION_11.toString()
+    options.release.set(11)
+}
+
 gradlePlugin {
     plugins {
         create("dependencies") {