
   *
   * The input element can be accessed by the `inputElement` property if you need to access
   * properties or methods that are not exposed.
   * @polymerBehavior Polymer.PaperInputBehavior
   */
  Polymer.PaperInputBehaviorImpl = {
    properties: {
      /**
       * Fired when the input changes due to user interaction.
       *
       * @event change
       */

      /**
       * The label for this input. Bind this to `<label>`'s content and `hidden` property, e.g.
       * `<label hidden$="[[!labe