anchor.diff:        listeners['gesturetap'] = onGestureTap;
       if (onGestureTapDown != null)
         listeners['gesturetapdown'] = onGestureTapDown;
  +    if (onGestureLongPress != null)
  +      listeners['gesturelongpress'] = onGestureLongPress;
  +    if (onGestureShowPress != null)
  +      listeners['gestureshowpress'] = onGestureShowPress;
       if (onPointerCancel != null)
         listeners['pointercancel'] = onPointerCancel;
       if (onPointerDown != null)
  
positive.code:     GestureEventListener onGestureFlingStart,
      GestureEventListener onGestureScrollStart,
      GestureEventListener onGestureScrollUpdate,
      GestureEventListener onGestureTap,
      GestureEventListener onGestureTapDown,
      PointerEventListener onPointerCancel,
      PointerEventListener onPointerDown,
      PointerEventListener onPointerMove,
  
negative.code:     GestureEventListener onGestureScrollUpdate,
      GestureEventListener onGestureTap,
      GestureEventListener onGestureTapDown,
      GestureEventListener onGestureLongPress,
      GestureEventListener onGestureShowPress,
      PointerEventListener onPointerCancel,
      PointerEventListener onPointerDown,
      PointerEventListener onPointerMove,
  