pkg/front_end/testcases/general/with_dependencies/extension_from_dill/extension_from_dill_lib2.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
extension Extension on String {
  foo() => 42;
}