async def aclear(self) -> None:
        """
        Asynchronous method to clear the index.
        """
        self._ensure_async_client()

        await self._aclient.delete_collection(collection_name=self.collection_name)
        self._collection_initialized = False

        Asynchronous method to clear the index.
        
llama-index-integrations/vector_stores/llama-index-vector-stores-qdrant/llama_index/vector_stores/qdrant/base.py