.stream()
                        .map(s -> "doc." + s)
                        .forEach(s -> messages.addErrorsPropertyRequired(s, s)));
            }
            if (!fessConfig.validateIndexDateFields(doc)) {
                throwError.accept(messages -> fessConfig.invalidIndexDateFields(doc)
                        .stream()
                        .map(s -> "doc." + s)

            propMap.put(INDEX_ADMIN_DATE_FIELD_SET, fieldSet);
        }
        return fieldSet;
    }

    default boolean validateIndexDateFields(final Map<String, Object> source) {
        return invalidIndexDateFields(source).isEmpty();
    }

    default List<String> invalidIndexDateFields(final Map<String, Object> source) {