| // 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. | |
| import '../common.dart'; | |
| extension PageUtils on Page { | |
| void throwIfIsLast() { | |
| if (isLast) { | |
| throw StateError('Page.next() cannot be called when Page.isLast == true'); | |
| } | |
| } | |
| } |