// Copyright (c) 2014, 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. | |
class UsageException implements Exception { | |
final String message; | |
final String usage; | |
UsageException(this.message, this.usage); | |
@override | |
String toString() => '$message\n\n$usage'; | |
} |