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

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

        public void columnResponseTime() {
            doColumn("responseTime");
        }

        public void columnRoles() {
            doColumn("roles");
        }

        public void columnSearchWord() {

    public ColumnInfo columnReferer() {
        return _columnReferer;
    }

    public ColumnInfo columnRequestedAt() {
        return _columnRequestedAt;
    }

    public ColumnInfo columnResponseTime() {
        return _columnResponseTime;
    }

    public ColumnInfo columnRoles() {
        return _columnRoles;
    }

    public ColumnInfo columnSearchWord() {