pkg/front_end/testcases/extensions/explicit_this2.dart.textual_outline_modelled.expect

class A1 {
  Object? field;
  void method1() {}
}

extension A2 on A1 {
  Object? method3() => this.field;
  void method2() => this.method1();
  void method4(Object? o) {}
}

main() {}