// 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.

class ExceptionImplementation implements Exception {
  final message;
  const ExceptionImplementation([this.message]);
  String toString() => (message == null) ? "Exception" : "Exception: $message";
}