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(df):
            df2 = df[['A']]
            df2['A'] += 10
            return df2.A, df.A