hide method
      
void
hide()
      
     
    
Hides the trackball if it is displayed.
Implementation
void hide() {
  final RenderBehaviorArea? parent = parentBox as RenderBehaviorArea?;
  _position = null;
  if (builder != null) {
    parent?.trackballBuilder!(<TrackballDetails>[]);
  }
  _resetDataHolders();
  parent?.invalidate();
}