public void columnQueryPageSize() {
            doColumn("queryPageSize");
        }

        public void columnQueryTime() {
            doColumn("queryTime");
        }

        public void columnReferer() {
            doColumn("referer");
        }

        public void columnRequestedAt() {
            doColumn("requestedAt");
        }

        public void columnResponseTime() {

        return _columnQueryPageSize;
    }

    public ColumnInfo columnQueryTime() {
        return _columnQueryTime;
    }

    public ColumnInfo columnReferer() {
        return _columnReferer;
    }

    public ColumnInfo columnRequestedAt() {
        return _columnRequestedAt;
    }

    public ColumnInfo columnResponseTime() {
        return _columnResponseTime;