| // Copyright (c) 2024, 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. | |
| abstract class Interface {} | |
| mixin Mixin0<X> {} | |
| mixin Mixin1<X extends Interface> {} | |
| mixin Mixin2<X extends Interface> {} | |
| abstract class C<X, Y, Z extends Interface> with Mixin0<Y>, Mixin1, Mixin2<Z> {} |