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 step_impl(context, rel_url):
    context.request = LazyRequest(
        'POST', context.helpers.url(rel_url), context.token)