--- libgee-0.7.90/gee/treemap.c.declaration	2012-08-28 13:35:16.000000000 +0700
+++ libgee-0.7.90/gee/treemap.c	2012-09-05 18:35:13.124163383 +0700
@@ -1510,6 +1510,7 @@
 static GeeSortedMap* gee_tree_map_sub_map_real_tail_map (GeeAbstractSortedMap* base, gconstpointer after);
 static GeeSortedMap* gee_tree_map_sub_map_real_sub_map (GeeAbstractSortedMap* base, gconstpointer after, gconstpointer before);
 GeeSet* gee_abstract_map_get_keys (GeeAbstractMap* self);
+GeeSet* gee_map_get_keys (GeeMap* self);
 gint gee_collection_get_size (GeeCollection* self);
 static gboolean gee_tree_map_sub_map_get_is_empty (GeeTreeMapSubMap* self);
 gboolean gee_collection_get_is_empty (GeeCollection* self);