code: def _connect_setns(spec, kind=None):
      
      return {
          'method': 'setns',
          'kwargs': {
              'container': spec.remote_addr(),
              'username': spec.remote_user(),
              'python_path': spec.python_path(),
              'kind': kind or spec.mitogen_kind(),
              'docker_path': spec.mitogen_docker_path(),
              'lxc_path': spec.mitogen_lxc_path(),
              'lxc_info_path': spec.mitogen_lxc_info_path(),
              'machinectl_path': spec.mitogen_machinectl_path(),
          }
      }
docs: Return ContextService arguments for a mitogen_setns connection.