pkg/front_end/testcases/no_such_method_forwarders/regress_53677.dart.textual_outline.expect

mixin class A {
  dynamic noSuchMethod(Invocation inv) {}
}

mixin M on A {
  String m1(int v, [String s = "s1"]);
  String m2(int v, {String s});
  String m3(int v, {required String s});
  String m4(int v, [covariant String s]);
}

class MA = A with M;

main() {}