// Copyright (c) 2021, 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.

// @dart=2.9

void main() {
  final l = <Object>[];
  l.add((String x, StringBuffer y) {
    print(x);
  });
}