code: public static MessageDto notifyUnit(NotifyUnitParams notifyUnitParams) {
          MessageDto msg = new MessageDto();
          msg.setGroupId(notifyUnitParams.getGroupId());
          msg.setAction(MessageConstants.ACTION_NOTIFY_UNIT);
          msg.setData(notifyUnitParams);
          return msg;
      }
docs: 提交事务组
  
  @param notifyUnitParams notifyUnitParams
  @return MessageDto