public void columnDepth() {
            doColumn("depth");
        }

        public void columnDescription() {
            doColumn("description");
        }

        public void columnExcludedDocUrls() {
            doColumn("excludedDocUrls");
        }

        public void columnExcludedUrls() {
            doColumn("excludedUrls");
        }

        public void columnIncludedDocUrls() {

    }

    public ColumnInfo columnDepth() {
        return _columnDepth;
    }

    public ColumnInfo columnDescription() {
        return _columnDescription;
    }

    public ColumnInfo columnExcludedDocUrls() {
        return _columnExcludedDocUrls;
    }

    public ColumnInfo columnExcludedUrls() {
        return _columnExcludedUrls;
    }

    public ColumnInfo columnIncludedDocUrls() {