pkg/front_end/testcases/nnbd_mixed/issue42387/foundation_binding_lib.dart

// 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.

// @dart = 2.9

import 'foundation_basic_types_lib.dart';

abstract class BindingBase {
  void registerSignalServiceExtension(
      {required String name, required AsyncCallback callback}) {}
}