Implement getRange (returning an Iterable).

editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart

Index: editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
diff --git a/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart b/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
index 900c2ca7093040a5dcb0a186381e0bfcbefaf939..12224b958318a68428ab8ffda354a4a8a37337ec 100644
--- a/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
+++ b/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
@@ -324,7 +324,7 @@ class ListWrapper<E> extends Collection<E> implements List<E> {
 
   List<E> sublist(int start, [int end]) => elements.sublist(start, end);
 
-  List<E> getRange(int start, int length) => sublist(start, start + length);
+  Iterable<E> getRange(int start, int end) => elements.getRange(start, end);
 
   void setRange(int start, int length, List<E> from, [int startFrom]) {
     elements.setRange(start, length, from, startFrom);