| // Copyright (c) 2021, 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. |
| |
| class Constant { |
| final int _field; |
| |
| const Constant._(this._field); |
| |
| static const Constant a = const Constant._(0); |
| } |
| |
| abstract class Interface { |
| Future<void> method({Constant c: Constant.a}); |
| Future<void> method2(); |
| } |
| |
| class Class implements Interface { |
| Future<void> method({c: Constant.a}) async {} |
| Future<void> method2() async {} |
| } |
