* List of xTR-IDs that need to be removed
*/
void removeXtrIdMappings(Eid key, List<XtrId> xtrIds);
+
+ /**
+ * Returns the parent prefix for given key.
+ *
+ * @param key
+ * The key which parent is to be returned.
+ * @return The parent perfix of a specific key.
+ */
+ Eid getParentPrefix(Eid key);
}