def retrieve_all(
        self, query_bundle: QueryBundle
    ) -> Tuple[List[NodeWithScore], List[NodeWithScore]]:
        """
        Retrieve all nodes.

        Unlike default `retrieve` method, this also fetches additional sources.

        """
        return self._retrieve_rec(query_bundle, query_id=None)

        Retrieve all nodes.

        Unlike default `retrieve` method, this also fetches additional sources.

        
llama-index-core/llama_index/core/retrievers/recursive_retriever.py