// 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.

const String valueClass = "valueClass";

@valueClass
class Animal {
  final int numLegs = 4;
}

@valueClass
class Cat implements Animal {
  final int numLegs = 4;
  final int numWhiskers = 4;
}

main() {}