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 setup_run_environment(self, env):
        bashrc = self.prefix.etc.bashrc
        try:
            env.extend(EnvironmentModifications.from_sourcing_file(
                bashrc, clean=True
            ))
        except Exception as e:
            msg = 'unexpected error when sourcing OpenFOAM bashrc [{0}]'
            tty.warn(msg.format(str(e)))