pkg/front_end/testcases/extensions/patch/origin_lib.dart

// Copyright (c) 2024, 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.

extension IntExtension on int {
  external int method1();
}

method1() {
  0.method1();
  0.method2();
}