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() {