def _handle_schema_change(self, event):
        if self._schema_event_refresh_window < 0:
            return
        delay = self._delay_for_event_type('schema_change', self._schema_event_refresh_window)
        self._cluster.scheduler.schedule_unique(delay, self.refresh_schema, **event)
dataset/ETHPy150Open datastax/python-driver/cassandra/cluster.py/ControlConnection._handle_schema_change/original