langchain/retrievers/zep.py/ZepRetriever/get_relevant_documents
class ZepRetriever:    def get_relevant_documents(self, query: str) -> List[Document]:
        from zep_python import SearchPayload

        payload: SearchPayload = SearchPayload(text=query)

        results: List[SearchResult] = self.zep_client.search_memory(
            self.session_id, payload, limit=self.top_k
        )

        return self._search_result_to_doc(results)