Wrapping leaf nodes in non polymer elements

runtime/observatory/lib/src/models/repository.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library dart2js.serialization.compilation4_test;
+part of models;
 
-import 'compilation_test_helper.dart' as test;
-import 'test_data.dart';
+abstract class Repository<ObjectT, DescriptorT> {
+  Future<ObjectT> get(DescriptorT id);
+}
 
-main() {
-  test.main(['${3 * TESTS.length ~/ 4}']);
-}
+abstract class ScriptRepository extends Repository<Script, String> {}