}

    @Test
    public void test_user_mail() {
        final User user = new User();
        assertNull(user.getMail());

        user.setMail("******@****.***");
        assertEquals("******@****.***", user.getMail());
    }

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

        return convertEmptyToNull(labeledURI);
    }

    public void setLabeledURI(String value) {
        registerModifiedProperty("labeledURI");
        this.labeledURI = value;
    }

    public String getMail() {
        checkSpecifiedProperty("mail");
        return convertEmptyToNull(mail);
    }

    public void setMail(String value) {
        registerModifiedProperty("mail");
        this.mail = value;

                val = interpolate(org);
                if (org != val) {
                    contributor.setName(val);
                }
                // Email
                org = contributor.getEmail();
                val = interpolate(org);
                if (org != val) {
                    contributor.setEmail(val);
                }
                // Url
                org = contributor.getUrl();

        setupEpg(_epgMap, et -> ((User) et).getLabeledURI(), (et, vl) -> ((User) et).setLabeledURI(DfTypeUtil.toString(vl)), "labeledURI");
        setupEpg(_epgMap, et -> ((User) et).getMail(), (et, vl) -> ((User) et).setMail(DfTypeUtil.toString(vl)), "mail");
        setupEpg(_epgMap, et -> ((User) et).getMobile(), (et, vl) -> ((User) et).setMobile(DfTypeUtil.toString(vl)), "mobile");