pkg/front_end/testcases/general/issue43400.dart

// Copyright (c) 2023, 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 Generic<A> {}

extension Extension<A> on Generic<A> {
  static Generic<A> field = null;
}