public void setStreet(String value) {
        registerModifiedProperty("street");
        this.street = value;
    }

    public String getSurname() {
        checkSpecifiedProperty("surname");
        return convertEmptyToNull(surname);
    }

    public void setSurname(String value) {
        registerModifiedProperty("surname");
        this.surname = value;
    }

    public String getTelephoneNumber() {

        setupEpg(_epgMap, et -> ((User) et).getStreet(), (et, vl) -> ((User) et).setStreet(DfTypeUtil.toString(vl)), "street");
        setupEpg(_epgMap, et -> ((User) et).getSurname(), (et, vl) -> ((User) et).setSurname(DfTypeUtil.toString(vl)), "surname");
        setupEpg(_epgMap, et -> ((User) et).getTelephoneNumber(), (et, vl) -> ((User) et).setTelephoneNumber(DfTypeUtil.toString(vl)),
                "telephoneNumber");

        final User user = new User();
        user.setName("testuser");
        assertNull(user.getSurname());

        // When surname is blank, convertEmptyToNull converts it to null
        user.setSurname("");
        assertNull(user.getSurname());

        user.setSurname(user.getName());
        assertEquals("testuser", user.getSurname());
    }

    @Test
    public void test_user_clearOriginalPassword() {

            result.setState(DfTypeUtil.toString(source.get("state")));
            result.setStreet(DfTypeUtil.toString(source.get("street")));
            result.setSurname(DfTypeUtil.toString(source.get("surname")));
            result.setTelephoneNumber(DfTypeUtil.toString(source.get("telephoneNumber")));