get hasGestureHandlers() {
            return !!(this.pressHandler ||
                      this.nonPrimaryPressHandler ||
                      this.releaseHandler ||
                      this.nonPrimaryReleaseHandler ||
                      this.clickHandler ||
                      this.dblClickHandler ||
                      this.dragHandler ||
                      this.dragEndHandler ||
                      this.pinchHandler);
        }
Do we currently have any assigned gesture handlers.
@returns {Boolean} Do we currently have any assigned gesture handlers.