code: def update(self, client=None):
          
          client = self._require_client(client)
          query_params = self._query_params
          query_params["projection"] = "full"
          api_response = client._connection.api_request(
              method="PUT",
              path=self.path,
              data=self._properties,
              query_params=query_params,
              _target_object=self,
          )
          self._set_properties(api_response)
docs: Sends all properties in a PUT request.
  
          Updates the ``_properties`` with the response from the backend.
  
          If :attr:`user_project` is set, bills the API request to that project.
  
          :type client: :class:`~google.cloud.storage.client.Client` or
                        ``NoneType``
          :param client: the client to use.  If not passed, falls back to the
                         ``client`` stored on the current object.