pkg/front_end/testcases/extensions/use_this.dart.textual_outline.expect

class A1 {}

extension A2 on A1 {
  A1 method1() {}
  A1 method2<T>(T o) {}
}

class B1<T> {}

extension B2<T> on B1<T> {
  B1<T> method1() {}
  B1<T> method2<S>(S o) {}
}

main() {}