text: /**
      @license
      Copyright (c) 2016 The Polymer Project Authors. All rights reserved.
      This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
      The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
      The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
      Code distributed by Google as part of the polymer project is also
      subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
  */
  var external = true;
  