+ /**
+ * @param Row $row
+ * @param string $refName
+ * @param array $objects
+ * @return Rowset
+ */
+ function allOf(Row $row, $refName, &$objects = null);
+
+ /**
+ * @param Row $row
+ * @param string $refName
+ * @param array $objects
+ * @return Rowset
+ */
+ function refOf(Row $row, $refName, &$objects = null);
+
+ /**
+ * @param MapInterface $map origin
+ * @param string $refName relations reference name
+ * @return array relation reference
+ */
+ function relOf(MapInterface $map, $refName);
+