code: def update_swarm(self, version, swarm_spec=None, rotate_worker_token=False,
                       rotate_manager_token=False):
          
  
          url = self._url('/swarm/update')
          response = self._post_json(url, data=swarm_spec, params={
              'rotateWorkerToken': rotate_worker_token,
              'rotateManagerToken': rotate_manager_token,
              'version': version
          })
          self._raise_for_status(response)
          return True
docs: Update the Swarm's configuration
  
          Args:
              version (int): The version number of the swarm object being
                  updated. This is required to avoid conflicting writes.
              swarm_spec (dict): Configuration settings to update. Use
                  :py:meth:`~docker.api.swarm.SwarmApiMixin.create_swarm_spec` to
                  generate a valid configuration. Default: ``None``.
              rotate_worker_token (bool): Rotate the worker join token. Default:
                  ``False``.
              rotate_manager_token (bool): Rotate the manager join token.
                  Default: ``False``.
  
          Returns:
              ``True`` if the request went through.
  
          Raises:
              :py:class:`docker.errors.APIError`
                  If the server returns an error.