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_impl(n):
            df = pd.DataFrame({'A': np.arange(0, n, 1, np.float64)})
            return df.A.quantile(.25)