return null;
if (listenerType == DragSourceListener.class) return DnDEventMulticaster.getListeners (dragSourceListener, listenerType);  if (listenerType == DragSourceMotionListener.class) return DnDEventMulticaster.getListeners (dragSourceMotionListener, listenerType);   return new EventListener [0];
  public EventListener[] getListeners(Class type)  {    return null;  }