Name Event name.
     * @return {Object} Returns the gesture for the given event name.
     */
    _findRecognizerByEvent: function(evName) {
      for (let i = 0, r; i < this.recognizers.length; i++) {
        r = this.recognizers[i];
        for (let j = 0, n; j < r.emits.length; j++) {
          n = r.emits[j];
          if (n === evName) {
            return r;
          }
        }
      }
      return null;
    },

    /**
     * Sets scrolling direction on node.
     *
     * This value is checked on