@logging.log_task_wrapper(LOG.info, _("Exit context: `fuel_environments`"))
    def cleanup(self):
        self._delete_envs()
Like the "dojango_dojo_src_file" templatetag, but returning the theme css path. It uses the
dataset/ETHPy150Open openstack/rally/rally/plugins/openstack/context/fuel.py/FuelEnvGenerator.cleanup--crossover with--dataset/ETHPy150Open klipstein/dojango/dojango/util/config.py/Config.theme_css_url