def METHOD_NAME(self):
    transform = LoadAnnotations(
        with_bbox=False,
        with_label=False,
        with_seg=False,
        with_keypoints=True,
    )
    results = transform(copy.deepcopy(self.results))
    assert 'gt_keypoints' in results
    assert (results['gt_keypoints'] == np.array([[[1, 2, 3]],
                                                 [[4, 5, 6]]])).all()
    assert results['gt_keypoints'].dtype == np.float32