| // Copyright (c) 2022, 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 A { | |
| String foo() => 'A'; | |
| } | |
| mixin M on A { | |
| @override | |
| String foo() => 'M' + super.foo(); | |
| } |