+ bt_object_put_ref(writer_trace);
+ bt_object_put_ref(writer_event);
+ bt_object_put_ref(writer_event_class);
+ bt_object_put_ref(writer_stream_class);
+ bt_object_put_ref(stream_class);
+ bt_object_put_ref(writer_stream);
+ bt_object_put_ref(stream);
+ bt_object_put_ref(event_class);