def _is_aoss_enabled(self, http_auth: Any) -> bool:
        """Check if the service is http_auth is set as `aoss`."""
        return (
            http_auth is not None
            and hasattr(http_auth, "service")
            and http_auth.service == "aoss"
        )
Check if the service is http_auth is set as `aoss`.
llama-index-integrations/vector_stores/llama-index-vector-stores-opensearch/llama_index/vector_stores/opensearch/base.py