public void AddRelease(InvokeSet a)
 {
     if (onRelease == null)
     {
         onRelease = new UnityEvent();
     }
     a.Bind(onRelease);
 }
 public void AddPress(InvokeSet a)
 {
     if (onPress == null)
     {
         onPress = new UnityEvent();
     }
     a.Bind(onPress);
 }
 public void AddHold(InvokeSet a)
 {
     if (onHold == null)
     {
         onHold = new UnityEvent();
     }
     a.Bind(onHold);
 }