async def close_connection(self) -> None:
        """Close the connection to the Qdrant service."""
        if self.client:
            logger.info("Closing Qdrant client connection gracefully...")
            # Qdrant client doesn't have an explicit close method, but we can set it to None
            self.client = None
        else:
            logger.info("No Qdrant client connection to close.")
Close the connection to the Qdrant service.
backend/airweave/platform/destinations/qdrant.py