docs: public static void unregist(Object action) {
          if (logger.isInfoEnabled()) {
              logger.info(" Un Regist Action : " + action);
          }
  
          if (action != null) {
              for (Iterator<Map.Entry<EventType, Object>> iter = table.entrySet().iterator(); iter.hasNext();) {
                  Map.Entry<EventType, Object> entry = iter.next();
                  if (action == entry.getValue()) {
                      if (logger.isInfoEnabled()) {
                          logger.info(" Find " + entry.getKey() + " For : " + action);
                      }
  
                      iter.remove();
                  }
              }
          }
      }