| // Copyright (c) 2020, 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=2.6 | |
| import 'issue41210b_lib2.dart'; | |
| mixin A implements Interface { | |
| String method({String s = "hello"}) => s; | |
| } | |
| abstract class B implements Interface {} | |
| void main() {} |