Language/Expressions/Null/invoking_a_method_t01.dart

/*
 * Copyright (c) 2011, 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 [Null] class extends the [Object] class and declares no
 * methods except those also declared by [Object].
 * @description Checks that invoking [toString] method on [null] does not yield
 * error.
 * @author hlodvig
 * @issue 42219
 */

class A {}

main() {
  A? a = null;
  var x = a.toString();
}