 if the event happened inside of the ripple container
          // Fall back to host instead of the root because distributed text
          // nodes are not valid event targets
          var domContainer = Polymer.dom(this._rippleContainer || this);
          var target = Polymer.dom(optTriggeringEvent).rootTarget;
          if (domContainer.deepContains( /** @type {Node} */(target))) {
            this._ripple.uiDownAction(optTriggeringEvent);
          }
        }
      }
    },

    /**
     * Returns th