GenerateHintsTask - partial implementation.

pkg/analyzer/test/src/mock_sdk.dart

 // Copyright (c) 2014, 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 test.src.mock_sdk;
 
 import 'package:analyzer/file_system/file_system.dart' as resource;
 import 'package:analyzer/file_system/memory_file_system.dart' as resource;
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
@@ skipping 80 matching lines @@
   void clear();
 }
 
 abstract class Map<K, V> extends Object {
   Iterable<K> get keys;
 }
 
 external bool identical(Object a, Object b);
 
 void print(Object object) {}
+
+class _Override {
+  const _Override();
+}
+const Object override = const _Override();
 ''');
 
   static const _MockSdkLibrary LIB_ASYNC = const _MockSdkLibrary('dart:async',
       '/lib/async/async.dart', '''
 library dart.async;
 
 import 'dart:math';
 
 class Future<T> {
   factory Future.delayed(Duration duration, [T computation()]) => null;
@@ skipping 190 matching lines @@
   bool get isInternal => throw unimplemented;
 
   @override
   bool get isShared => throw unimplemented;
 
   @override
   bool get isVmLibrary => throw unimplemented;
 
   UnimplementedError get unimplemented => new UnimplementedError();
 }