code: public List<ValidationData> getValidationDatas(ParamType paramType, String key) {
          if (this.urlMap == null || this.validationDataRuleListMap == null) {
              log.info("url map is empty :: " + key );
              return null;
          }
  
          if (key == null || paramType == null) {
              throw new ValidationLibException("any parameter is null", HttpStatus.INTERNAL_SERVER_ERROR);
          }
  
          ReqUrl reqUrl = urlMap.get(key);
          if (reqUrl == null) {
              log.info("reqUrl is null :" + key);
              return null;
          }
  
          return validationDataRuleListMap.get(paramType.getUniqueKey(reqUrl.getUniqueKey()));
      }
docs: Gets validation datas.
  
  @param paramType the param type
  @param key       the key
  @return the validation datas