async def aclear(self) -> None:
        """
        Asynchronously clear all nodes from Elasticsearch index.
        This method deletes and recreates the index.
        """
        if await self._store.client.indices.exists(index=self.index_name):
            await self._store.client.indices.delete(index=self.index_name)

        Asynchronously clear all nodes from Elasticsearch index.
        This method deletes and recreates the index.
        
llama-index-integrations/vector_stores/llama-index-vector-stores-elasticsearch/llama_index/vector_stores/elasticsearch/base.py