public ColumnInfo columnRoles() {
        return _columnRoles;
    }

    public ColumnInfo columnRoomNumber() {
        return _columnRoomNumber;
    }

    public ColumnInfo columnState() {
        return _columnState;
    }

    public ColumnInfo columnStreet() {
        return _columnStreet;
    }

    public ColumnInfo columnSurname() {
        return _columnSurname;
    }