/*
 * 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  All opted-in libraries upstream from the legacy library are
 * viewed by the legacy library with nullability related features erased from
 * their APIs. In particular:
 *  - All types of the form T? in the opted-in API are treated as T.
 *  - All required named parameters are treated as optional named parameters.
 *  - The type Never is treated as the type Null
 *
 * @description Checks that legacy code cannot run in the strong mode/
 * @Issue 44545
 * @compile-error
 * @author iarkh@unipro.ru
 */
// Requirements=nnbd-strong
// @dart=2.6

main() {}