}

    @Test
    public void test_user_businessCategory() {
        final User user = new User();
        assertNull(user.getBusinessCategory());

        user.setBusinessCategory("Engineering");
        assertEquals("Engineering", user.getBusinessCategory());
    }

    @Test
    public void test_user_departmentNumber() {
        final User user = new User();

                setAttributeValue(result, fessConfig.getLdapAttrX121Address(), o -> user.setX121Address(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrBusinessCategory(), o -> user.setBusinessCategory(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrRegisteredAddress(), o -> user.setRegisteredAddress(o.toString()));