code: def to_vars_dict(self):
          
          return {
              'gcloud_client_id':      self._client_id,
              'gcloud_client_secret':  self._client_secret,
              'gcloud_network':        self._network,
              'gcloud_project_id':     self._project_id,
              'gcloud_zone':           self._zone,
          }
docs: Return local state which is relevant for the cluster setup process.