docs: public static void regist(EventType eventType, Object action) {
          if (logger.isInfoEnabled()) {
              logger.info(" Regist " + action + " For " + eventType);
          }
  
          if (table.containsKey(eventType)) {
              if (logger.isWarnEnabled()) {
                  logger.warn(" EventType " + eventType + " is already exist!");
              }
          }
          table.put(eventType, action);
      }