public AccountUserMapCollection FetchAll()
 {
     AccountUserMapCollection coll = new AccountUserMapCollection();
     Query qry = new Query(AccountUserMap.Schema);
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public AccountUserMapCollection FetchByQuery(Query qry)
 {
     AccountUserMapCollection coll = new AccountUserMapCollection();
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }