user->tc = bt_ctf_writer_get_trace(user->writer);
assert(user->tc);
user->sc = bt_ctf_stream_class_create("sc");
assert(user->sc);
clock = bt_ctf_clock_create("the_clock");
assert(clock);
user->tc = bt_ctf_writer_get_trace(user->writer);
assert(user->tc);
user->sc = bt_ctf_stream_class_create("sc");
assert(user->sc);
clock = bt_ctf_clock_create("the_clock");
assert(clock);