public byte[] Get_by(int ns_id, byte[] ttl) {
Xowd_page_itm rv = (Xowd_page_itm) pages.Get_by(Make_key(ns_id, ttl));
return rv == null ? null : rv.Text();
}
public void Add(int ns_id, byte[] ttl, byte[] text) {
Xowd_page_itm page = new Xowd_page_itm().Ns_id_(ns_id).Ttl_page_db_(ttl).Text_(text);
pages.Add(Make_key(ns_id, ttl), page);
}