public PnGrupoCollection FetchByQuery(Query qry)
        {
            PnGrupoCollection coll = new PnGrupoCollection();

            coll.LoadAndCloseReader(qry.ExecuteReader());
            return(coll);
        }
        public PnGrupoCollection FetchAll()
        {
            PnGrupoCollection coll = new PnGrupoCollection();
            Query             qry  = new Query(PnGrupo.Schema);

            coll.LoadAndCloseReader(qry.ExecuteReader());
            return(coll);
        }