code: def reload(self):
          
          cluster_pb = self._instance._client.instance_admin_client.get_cluster(self.name)
  
          # NOTE: _update_from_pb does not check that the project and
          #       cluster ID on the response match the request.
          self._update_from_pb(cluster_pb)
docs: Reload the metadata for this cluster.
  
          For example:
  
          .. literalinclude:: snippets.py
              :start-after: [START bigtable_reload_cluster]
              :end-before: [END bigtable_reload_cluster]