langchain/retrievers/azure_cognitive_search.py/AzureCognitiveSearchRetriever/get_relevant_documents
class AzureCognitiveSearchRetriever:    def get_relevant_documents(self, query: str) -> List[Document]:
        search_results = self._search(query)

        return [
            Document(page_content=result.pop(self.content_key), metadata=result)
            for result in search_results
        ]