public ColumnInfo columnDisplayName() {
        return _columnDisplayName;
    }

    public ColumnInfo columnEmployeeNumber() {
        return _columnEmployeeNumber;
    }

    public ColumnInfo columnEmployeeType() {
        return _columnEmployeeType;
    }

    public ColumnInfo columnFacsimileTelephoneNumber() {
        return _columnFacsimileTelephoneNumber;
    }