-/* GisCallback */
-G_DEFINE_TYPE(GisCallback, gis_callback, GIS_TYPE_OBJECT);
-static void gis_callback_init(GisCallback *cb)
+/* GritsCallback */
+G_DEFINE_TYPE(GritsCallback, grits_callback, GRITS_TYPE_OBJECT);
+static void grits_callback_init(GritsCallback *cb)