async def ause_old_sparse_encoder(self, collection_name: str) -> bool:
        """
        Asynchronous method to check if the collection uses the old sparse encoder format.
        """
        collection_exists = await self._acollection_exists(collection_name)
        if collection_exists:
            cur_collection = await self._aclient.get_collection(collection_name)
            return DEFAULT_SPARSE_VECTOR_NAME_OLD in (
                cur_collection.config.params.sparse_vectors or {}
            )

        return False

        Asynchronous method to check if the collection uses the old sparse encoder format.
        
llama-index-integrations/vector_stores/llama-index-vector-stores-qdrant/llama_index/vector_stores/qdrant/base.py