- ly_add_type_predicate ((void *) &Item::is_smob, "Item");
- ly_add_type_predicate ((void *) &Music::is_smob, "Music");
- ly_add_type_predicate ((void *) &Spanner::is_smob, "Spanner");
- ly_add_type_predicate ((void *) &Stream_event::is_smob, "Stream_event");
+ ly_add_type_predicate ((void *) &unsmob<Item>, "Item");
+ ly_add_type_predicate ((void *) &unsmob<Music>, "Music");
+ ly_add_type_predicate ((void *) &unsmob<Spanner>, "Spanner");
+ ly_add_type_predicate ((void *) &unsmob<Stream_event>, "Stream_event");