def METHOD_NAME(real_assemblies, real_tracklets):
    tracklets_ref = real_tracklets.copy()
    _ = tracklets_ref.pop("header", None)
    tracklets = dict()
    mot_tracker = trackingutils.SORTBox(1, 1, 0.1)
    for ind, assemblies in real_assemblies.items():
        animals = np.stack([ass.data for ass in assemblies])
        bboxes = trackingutils.calc_bboxes_from_keypoints(animals)
        trackers = mot_tracker.track(bboxes)
        trackingutils.fill_tracklets(tracklets, trackers, animals, ind)
    assert len(tracklets) == len(tracklets_ref)
    assert [len(tracklet) for tracklet in tracklets.values()] == [
        len(tracklet) for tracklet in tracklets_ref.values()
    ]
    assert all(
        t.shape[1] == 4 for tracklet in tracklets.values() for t in tracklet.values()
    )