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 get_bind(self, mapper=None, **kwargs):
                    return super(MySession, self).get_bind(
                        mapper=mapper, **kwargs
                    )