Render member extensions correctly

Author: whyoleg

dokka-subprojects/core/src/main/kotlin/org/jetbrains/dokka/model/documentableUtils.kt

@@ -24,4 +24,5 @@ public fun DTypeParameter.filter(filteredSet: Set<DokkaSourceSet>): DTypeParamet
         )
     }
 
+// TODO: do we really need it in core here, or we could deprecate it?
 public fun Documentable.isExtension(): Boolean = this is Callable && receiver != null

dokka-subprojects/plugin-base/api/plugin-base.api

@@ -1371,12 +1371,9 @@ public class org/jetbrains/dokka/base/translators/documentables/DefaultPageCreat
 	protected fun contentForModule (Lorg/jetbrains/dokka/model/DModule;)Lorg/jetbrains/dokka/pages/ContentGroup;
 	protected fun contentForPackage (Lorg/jetbrains/dokka/model/DPackage;)Lorg/jetbrains/dokka/pages/ContentGroup;
 	protected fun contentForProperty (Lorg/jetbrains/dokka/model/DProperty;)Lorg/jetbrains/dokka/pages/ContentGroup;
-	protected fun contentForScope (Lorg/jetbrains/dokka/model/WithScope;Lorg/jetbrains/dokka/links/DRI;Ljava/util/Set;Ljava/util/List;)Lorg/jetbrains/dokka/pages/ContentGroup;
-	public static synthetic fun contentForScope$default (Lorg/jetbrains/dokka/base/translators/documentables/DefaultPageCreator;Lorg/jetbrains/dokka/model/WithScope;Lorg/jetbrains/dokka/links/DRI;Ljava/util/Set;Ljava/util/List;ILjava/lang/Object;)Lorg/jetbrains/dokka/pages/ContentGroup;
+	protected fun contentForScope (Lorg/jetbrains/dokka/model/WithScope;Lorg/jetbrains/dokka/links/DRI;Ljava/util/Set;)Lorg/jetbrains/dokka/pages/ContentGroup;
 	protected fun contentForScopes (Ljava/util/List;Ljava/util/Set;Ljava/util/List;)Lorg/jetbrains/dokka/pages/ContentGroup;
 	public static synthetic fun contentForScopes$default (Lorg/jetbrains/dokka/base/translators/documentables/DefaultPageCreator;Ljava/util/List;Ljava/util/Set;Ljava/util/List;ILjava/lang/Object;)Lorg/jetbrains/dokka/pages/ContentGroup;
-	protected fun divergentBlock (Lorg/jetbrains/dokka/base/translators/documentables/PageContentBuilder$DocumentableContentBuilder;Ljava/lang/String;Ljava/util/Collection;Lorg/jetbrains/dokka/pages/ContentKind;Lorg/jetbrains/dokka/model/properties/PropertyContainer;)V
-	public static synthetic fun divergentBlock$default (Lorg/jetbrains/dokka/base/translators/documentables/DefaultPageCreator;Lorg/jetbrains/dokka/base/translators/documentables/PageContentBuilder$DocumentableContentBuilder;Ljava/lang/String;Ljava/util/Collection;Lorg/jetbrains/dokka/pages/ContentKind;Lorg/jetbrains/dokka/model/properties/PropertyContainer;ILjava/lang/Object;)V
 	protected fun getContentBuilder ()Lorg/jetbrains/dokka/base/translators/documentables/PageContentBuilder;
 	public final fun getCustomTagContentProviders ()Ljava/util/List;
 	public final fun getDocumentableAnalyzer ()Lorg/jetbrains/dokka/analysis/kotlin/internal/DocumentableSourceLanguageParser;