Call :py:meth:`~.connect` and then check what region we're running in;
        adjust default limits as required for regions that differ (us-east-1).

def _update_limits_from_api(self):
        """
        Call :py:meth:`~.connect` and then check what region we're running in;
        adjust default limits as required for regions that differ (us-east-1).
        """
        region_limits = {
            'us-east-1': 70
        }
        self.connect()
        rname = self.conn._client_config.region_name
        if rname in region_limits:
            self.limits['File systems'].default_limit = region_limits[rname]
            logger.debug(
                'Running in region %s; setting EFS "File systems" default '
                'limit value to: %d', rname, region_limits[rname]
            )