| // Copyright (c) 2023, 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. | |
| // @dart=2.19 | |
| import 'dart:collection'; | |
| abstract class LegacyImplementBaseCore<E extends LinkedListEntry<E>> | |
| implements LinkedList<E> {} | |
| class LegacyImplementFinalCore implements MapEntry<int, int> { | |
| int get key => 0; | |
| int get value => 1; | |
| String toString() => "Bad"; | |
| } |