// Copyright (c) 2019, 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=2.9 | |
abstract class A<X> { | |
void foo({Iterable<X> x}); | |
} | |
class B<Y> implements A<Y> { | |
void foo({x}) {} | |
} | |
main() {} |