extern struct bt_private_trace *bt_private_trace_create(void);
-extern int bt_private_trace_set_assigns_automatic_stream_class_id(
+extern void bt_private_trace_set_assigns_automatic_stream_class_id(
struct bt_private_trace *trace, bt_bool value);
extern int bt_private_trace_set_name(struct bt_private_trace *trace,
const char *name);
-extern int bt_private_trace_set_uuid(struct bt_private_trace *trace,
+extern void bt_private_trace_set_uuid(struct bt_private_trace *trace,
bt_uuid uuid);
extern void bt_private_trace_borrow_environment_entry_by_index(