| // Copyright (c) 2023, 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=2.18 | |
| extension type ExtensionType1(int it) {} | |
| extension type ExtensionType2<T>._(int it) implements int, ExtensionType1 {} |