Added indexer function that returns the name of the indexer

src/obiavl.h

@@ -410,5 +410,18 @@ Obi_blob_p obi_avl_group_get(OBIDMS_avl_group_p avl_group, index_t idx);
 index_t obi_avl_group_add(OBIDMS_avl_group_p avl_group, Obi_blob_p value);
 
 
+/**
+ * @brief Recovers the name of an AVL group.
+ *
+ * @param avl_group A pointer on the AVL group structure.
+ *
+ * @returns A pointer on the name of the AVL group.
+ *
+ * @since April 2016
+ * @author Celine Mercier (celine.mercier@metabarcoding.org)
+ */
+const char* obi_avl_group_get_name(OBIDMS_avl_group_p avl_group);
+
+
 #endif /* OBIAVL_H_ */