@Override
    public boolean update(@NotNull DnDEvent event) {
      if (!isDroppable(event)) {
        hideDropArea();
        return false;
      }
      event.setHighlighting(myLabel, DnDEvent.DropTargetHighlightingType.RECTANGLE);
      event.setDropPossible(true);
      myDropArea.setVisible(true);
      return false;
    }
@Override
    public boolean update(@NotNull DnDEvent event)