docs: def pause(self, container):
          """
          Pauses all processes within a container.
  
          Args:
              container (str): The container to pause
  
          Raises:
              :py:class:`docker.errors.APIError`
                  If the server returns an error.
          """
          url = self._url('/containers/{0}/pause', container)
          res = self._post(url)
          self._raise_for_status(res)