public void columnGroups() {
            doColumn("groups");
        }

        public void columnHomeDirectory() {
            doColumn("homeDirectory");
        }

        public void columnHomePhone() {
            doColumn("homePhone");
        }

        public void columnHomePostalAddress() {
            doColumn("homePostalAddress");
        }

        public void columnInitials() {

    public ColumnInfo columnGroups() {
        return _columnGroups;
    }

    public ColumnInfo columnHomeDirectory() {
        return _columnHomeDirectory;
    }

    public ColumnInfo columnHomePhone() {
        return _columnHomePhone;
    }

    public ColumnInfo columnHomePostalAddress() {
        return _columnHomePostalAddress;
    }

    public ColumnInfo columnInitials() {