e: function() {
      if (this.opened && !this.__isAnimating) {
        this.notifyResize();
      }
      // Store it so we don't query too much.
      var focusableNodes = this._focusableNodes;
      this.__firstFocusableNode = focusableNodes[0];
      this.__lastFocusableNode = focusableNodes[focusableNodes.length - 1];
    }
  };

  /** @polymerBehavior */
  Polymer.IronOverlayBehavior = [Polymer.IronFitBehavior, Polymer.IronResizableBehavior, Polymer.IronOverlayBehaviorImpl];

  /**
  * Fired after the