public ColumnInfo columnErrorName() {
        return _columnErrorName;
    }

    public ColumnInfo columnLastAccessTime() {
        return _columnLastAccessTime;
    }

    public ColumnInfo columnThreadName() {
        return _columnThreadName;
    }

    public ColumnInfo columnUrl() {
        return _columnUrl;
    }

    protected List<ColumnInfo> ccil() {