async def _aretrieve(self, query_bundle: QueryBundle) -> List[NodeWithScore]:
        """
        Asynchronously retrieve nodes given query.

        Implemented by the user.

        """
        return self._retrieve(query_bundle)

        Asynchronously retrieve nodes given query.

        Implemented by the user.

        
llama-index-core/llama_index/core/base/base_retriever.py