Rename Grouping.elementIterator to sourceIterator

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib.txt

@@ -1610,8 +1610,8 @@ public final class kotlin/collections/CollectionsKt {
 }
 
 public abstract interface class kotlin/collections/Grouping {
-	public abstract fun elementIterator ()Ljava/util/Iterator;
 	public abstract fun keyOf (Ljava/lang/Object;)Ljava/lang/Object;
+	public abstract fun sourceIterator ()Ljava/util/Iterator;
 }
 
 public final class kotlin/collections/GroupingKt {

libraries/tools/kotlin-stdlib-gen/src/templates/Mapping.kt

@@ -408,7 +408,7 @@ fun mapping(): List<GenericFunction> {
         body {
             """
             return object : Grouping<T, K> {
-                override fun elementIterator(): Iterator<T> = this@groupingBy.iterator()
+                override fun sourceIterator(): Iterator<T> = this@groupingBy.iterator()
                 override fun keyOf(element: T): K = keySelector(element)
             }
             """