def refresh_user_aggregate_metadata(self, keyspace, aggregate, max_schema_agreement_wait=None):
        """
        Synchronously refresh user defined aggregate metadata.

        ``aggregate`` is a :class:`cassandra.UserAggregateDescriptor`.

        See :meth:`~.Cluster.refresh_schema_metadata` for description of ``max_schema_agreement_wait`` behavior
        """
        if not self.control_connection.refresh_schema(target_type=SchemaTargetType.AGGREGATE, keyspace=keyspace, aggregate=aggregate,
                                                      schema_agreement_wait=max_schema_agreement_wait, force=True):
            raise DriverException("User Aggregate metadata was not refreshed. See log for details.")
Synchronously refresh user defined aggregate metadata.

        ``aggregate`` is a :class:`cassandra.UserAggregateDescriptor`.

        See :meth:`~.Cluster.refresh_schema_metadata` for description of ``max_schema_agreement_wait`` behavior