}

    @Test
    public void test_user_roomNumber() {
        final User user = new User();
        assertNull(user.getRoomNumber());

        user.setRoomNumber("101");
        assertEquals("101", user.getRoomNumber());
    }

    @Test
    public void test_user_mobile() {
        final User user = new User();
        assertNull(user.getMobile());

                        .forEach(v -> modifyDeleteEntry(modifyList, attrLabeledURI, v)));
        final String attrRoomNumber = fessConfig.getLdapAttrRoomNumber();
        OptionalUtil.ofNullable(user.getRoomNumber())
                .filter(StringUtil::isNotBlank)
                .ifPresent(s -> modifyReplaceEntry(modifyList, attrRoomNumber, s))
                .orElse(() -> getAttributeValueList(result, attrRoomNumber).stream()