e Gesture type: `down`, `up`, `track`, or `tap`
     * @param {Function} handler Event listener function to call
     * @return {boolean} Returns true if a gesture event listener was added.
     */
    addListener: function(node, evType, handler) {
      if (this.gestures[evType]) {
        this._add(node, evType, handler);
        return true;
      }
    },

    /**
     * Removes an event listener from a node for the given gesture type.
     *
     * @memberof Polymer.Gestures
     * @param {Node} node N