def METHOD_NAME(self) -> str:
    trail_name = self._get_param("TrailName")
    trail_arn, insight_selectors = self.cloudtrail_backend.METHOD_NAME(
        trail_name=trail_name
    )
    resp: Dict[str, Any] = {"TrailARN": trail_arn}
    if insight_selectors:
        resp["InsightSelectors"] = insight_selectors
    return json.dumps(resp)