.forEach(v -> modifyDeleteEntry(modifyList, attrSurname, v)));
        final String attrGivenName = fessConfig.getLdapAttrGivenName();
        OptionalUtil.ofNullable(user.getGivenName())
                .filter(StringUtil::isNotBlank)
                .ifPresent(s -> modifyReplaceEntry(modifyList, attrGivenName, s))
                .orElse(() -> getAttributeValueList(result, attrGivenName).stream()