def METHOD_NAME():
    for mixer in _mixer_registry.values():
        if len(mixer.actions) == 0:
            continue
        do_start_stop = mixer.stopped
        if do_start_stop:
            mixer.start()
        for action in list(mixer.actions):
            mixer.wait(mixer.cancel(action))
        mixer.wait()
        assert len(mixer.actions) == 0, mixer.actions
        if do_start_stop:
            mixer.abort(ignore_errors=False)
        assert len(mixer.actions) == 0, mixer.actions