docs: private List<com.baidu.unbiz.fluentvalidator.Validator> getAddOnValidators(FluentValid fluentValid) {
          Class<? extends com.baidu.unbiz.fluentvalidator.Validator>[] addOnValidatorClasses;
          List<com.baidu.unbiz.fluentvalidator.Validator> addOnValidators = null;
          if (!ArrayUtil.isEmpty(fluentValid.value())) {
              LOGGER.debug(String.format("{} additional validators found"), fluentValid.value().length);
              addOnValidatorClasses = fluentValid.value();
              addOnValidators = CollectionUtil.createArrayList(fluentValid.value().length);
              for (Class<? extends com.baidu.unbiz.fluentvalidator.Validator> addOnValidatorClass :
                      addOnValidatorClasses) {
                  List<?> beans = registry.findByType(addOnValidatorClass);
                  if (!CollectionUtil.isEmpty(beans)) {
                      addOnValidators.add((com.baidu.unbiz.fluentvalidator.Validator) beans.get(0));
                  }
              }
          }
          return addOnValidators;
      }