docs: public static ErrorCode isUriValid(String uri){
          if(uri == null || uri.isEmpty()){
              return ErrorCode.SERVICE_INSTANCE_URI_FORMAT_ERROR;
          }
          if (!isMustFieldValid(uri, urlRegEx)
                  || ! isValidBrace(uri)) {
              return ErrorCode.SERVICE_INSTANCE_URI_FORMAT_ERROR;
          }
          return ErrorCode.OK;
      }