code: public static ErrorCode isNameValid(String name) {
          if (!isMustFieldValid(name, nameRegEx)) {
              return ErrorCode.SERVICE_INSTANCE_NAME_FORMAT_ERROR;
          }
          return ErrorCode.OK;
      }
docs: Validate the instance service name.
  
  @param name
  the service name String.
  @return
  OK if matched the name pattern.