.forEach(v -> modifyDeleteEntry(modifyList, attrTeletexTerminalIdentifier, v)));
        final String attrX121Address = fessConfig.getLdapAttrX121Address();
        OptionalUtil.ofNullable(user.getX121Address()).filter(StringUtil::isNotBlank)
                .ifPresent(s -> modifyReplaceEntry(modifyList, attrX121Address, s))
                .orElse(() -> getAttributeValueList(result, attrX121Address).stream()