protected final Map<String, PropertyGateway> _epgMap = newHashMap();
    {
        setupEpg(_epgMap, et -> ((User) et).getBusinessCategory(), (et, vl) -> ((User) et).setBusinessCategory(DfTypeUtil.toString(vl)),
                "businessCategory");
        setupEpg(_epgMap, et -> ((User) et).getCarLicense(), (et, vl) -> ((User) et).setCarLicense(DfTypeUtil.toString(vl)), "carLicense");

    protected <RESULT extends User> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setBusinessCategory(DfTypeUtil.toString(source.get("businessCategory")));
            result.setCarLicense(DfTypeUtil.toString(source.get("carLicense")));
            result.setCity(DfTypeUtil.toString(source.get("city")));

    }

    @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();