ly_add_type_predicate ((void*) &is_direction, "direction");
ly_add_type_predicate ((void*) &is_music_function, "Music_function");
ly_add_type_predicate ((void*) &ly_is_port, "port");
+ ly_add_type_predicate ((void*) &ly_cheap_is_list, "list");
ly_add_type_predicate ((void*) &unsmob_global_context, "Global_context");
ly_add_type_predicate ((void*) &unsmob_input, "Input");
ly_add_type_predicate ((void*) &unsmob_moment, "Moment");