code: public static ServiceMessage error(int errorType, int errorCode, String errorMessage) {
      return ServiceMessage.builder()
          .qualifier(Qualifier.asError(errorType))
          .data(new ErrorData(errorCode, errorMessage))
          .build();
    }
docs: Instantiates new message with error qualifier for given error type and specified error code and
  message.
  
  @param errorType the error type to be used in message qualifier.
  @param errorCode the error code.
  @param errorMessage the error message.
  @return builder.