}

        public void columnId() {
            doColumn("_id");
        }

        public void columnAvailable() {
            doColumn("available");
        }

        public void columnCrawler() {
            doColumn("crawler");
        }

        public void columnCreatedBy() {
            doColumn("createdBy");
        }

        public void columnCreatedTime() {

    public ColumnInfo columnAvailable() {
        return _columnAvailable;
    }

    public ColumnInfo columnCrawler() {
        return _columnCrawler;
    }

    public ColumnInfo columnCreatedBy() {
        return _columnCreatedBy;
    }

    public ColumnInfo columnCreatedTime() {
        return _columnCreatedTime;
    }