}
        return fieldSet;
    }

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

    default List<String> invalidIndexLongFields(final Map<String, Object> source) {
        final LongTypeValidator longValidator = new LongTypeValidator();
        return split(getIndexAdminLongFields(), ",").get(

                        .forEach(s -> messages.addErrorsPropertyTypeInteger(s, s)));
            }
            if (!fessConfig.validateIndexLongFields(doc)) {
                throwError.accept(messages -> fessConfig.invalidIndexLongFields(doc)
                        .stream()
                        .map(s -> "doc." + s)
                        .forEach(s -> messages.addErrorsPropertyTypeLong(s, s)));
            }