def _import_async_bulk(self) -> Any:
        """Import bulk if available, otherwise raise error."""
        try:
            from opensearchpy.helpers import async_bulk
        except ImportError:
            raise ImportError(IMPORT_OPENSEARCH_PY_ERROR)
        return async_bulk
Import bulk if available, otherwise raise error.
llama-index-integrations/vector_stores/llama-index-vector-stores-lindorm/llama_index/vector_stores/lindorm/base.py