protected void fireServerStarEvent(ServerStartEvent evt) {
    if (serverStartListenerList != null) {
      Object[] listeners = serverStartListenerList.getListenerList();
      for (int i=0; i<listeners.length; i+=2) {
        if (!isActive()) break;
        if (listeners[i]==ServerStartListener.class) {
          ((ServerStartListener)listeners[i+1]).OnServerStartEvent(evt);
        }
      }
    }
  }