| // 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. | |
| class A extends void {} | |
| class B implements void {} | |
| class C with void {} | |
| extension type D(Object o) implements void {} | |
| mixin E implements void {} | |
| mixin F on void {} | |
| enum G with void { g } | |
| enum H implements void { h } |