public ColumnInfo columnCreatedTime() {
        return _columnCreatedTime;
    }

    public ColumnInfo columnGenerator() {
        return _columnGenerator;
    }

    public ColumnInfo columnPath() {
        return _columnPath;
    }

    public ColumnInfo columnTarget() {
        return _columnTarget;
    }

    public ColumnInfo columnThumbnailId() {
        return _columnThumbnailId;