}

    @Test
    public void test_user_telephoneNumber() {
        final User user = new User();
        assertNull(user.getTelephoneNumber());

        user.setTelephoneNumber("123-456-7890");
        assertEquals("123-456-7890", user.getTelephoneNumber());
    }

    @Test
    public void test_user_homePhone() {
        final User user = new User();
        assertNull(user.getHomePhone());

                        .forEach(v -> modifyDeleteEntry(modifyList, attrEmployeeNumber, v)));
        final String attrTelephoneNumber = fessConfig.getLdapAttrTelephoneNumber();
        OptionalUtil.ofNullable(user.getTelephoneNumber())
                .filter(StringUtil::isNotBlank)
                .ifPresent(s -> modifyReplaceEntry(modifyList, attrTelephoneNumber, s))