pkg/front_end/testcases/general/invalid_override_required_named.dart

// Copyright (c) 2025, 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.

class Super {
  foo({num? x}) {}
}

class Sub extends Super {
  foo({required dynamic x}) {}
}