// Copyright (c) 2020, 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.

/// @assertion The NORM relation defines the canonical representative of classes
/// of equivalent types...
/// This is based on the following equations:
///   T*? == T?
///
/// @description Checks that T*? == T?
///
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-weak
import 'opted_in_lib.dart';
import 'opted_out_lib.dart';

class C extends LE<String> implements A<String?> {}

main() {
  new C();
}