// Copyright (c) 2021, 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. | |
enum A { a1, a2 } | |
class B { | |
void foo({A? x = A.a1}) {} | |
} | |
class C implements B { | |
void foo({A? x}) {} | |
} | |
B obj = C(); | |
void main() { | |
obj.foo(); | |
} |