// Copyright (c) 2012, 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.

part of $LIBRARYNAME;

@DocsEditable()
$(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
$!MEMBERS
$if DARTIUM
  // Flags to only try upgrading once if there's a failure don't try upgrading
  // anymore.
  bool _badUpgradeOccurred = false;
  bool get _isBadUpgrade => _badUpgradeOccurred;
  void _badUpgrade() { _badUpgradeOccurred = true; }
$endif
}