static void show(int aType, JLayeredPane aPane, Rectangle aRectangle, DnDEvent aEvent) {
    List<DropTargetHighlighter> toShow = new ArrayList<>();
    for (DropTargetHighlighter ourHightlighter : ourHightlighters) {
      if ((ourHightlighter.getMask() & aType) != 0) {
        toShow.add(ourHightlighter);
      }
    }

    for (int i = 0; i < toShow.size(); i++) {
      DropTargetHighlighter each = toShow.get(i);
      each.show(aPane, aRectangle, aEvent);
    }
    ourCurrentHighlighters.addAll(toShow);
  }
static void show(int aType, JLayeredPane aPane, Rectangle aRectangle, DnDEvent aEvent)