def modify_state_for_body(s, body):
            s.layers['segmentation'].segments = frozenset([body.segment_id])
            s.voxel_coordinates = body.bbox_start + body.bbox_size // 2
def test_equal_to():
    """Equal to y."""
    p = are.equal_to(1)
    ps = [p(x) for x in range(1, 6)]
    assert ps == [True, False, False, False, False]