class OpenFgaFacade:
    """
    Facade class for interacting with OpenFGA authorization service.
    """

    def __init__(self, api_url=None):
        """
        Initialize the OpenFGA facade.

        Args:
            api_url: The OpenFGA API URL. If not provided, it will be read from FGA_API_URL environment variable.
        """
        self.api_url = api_url or os.environ.get("FGA_API_URL", "http://localhost:8085/")
        # Defer client creation until needed
        self.client = None

    async def initialize(self):
        """
        Asynchronously initialize the OpenFGA client with store and authorization model.
        This method must be called before using the facade.
        """
        configuration = openfga_sdk.ClientConfiguration(
            api_url=self.api_url,
            store_id=os.environ.get("FGA_STORE_ID"),
            authorization_model_id=os.environ.get("FGA_AUTHORIZATION_MODEL_ID"),
        )
        # Defer client creation until needed
        self.client = AsyncOpenFgaClient(configuration)
        await self.client.read_authorization_models()

    async def write_tuple(self):
        """
        Write a tuple to the OpenFGA store.
        
        This is a sample method that writes a test tuple.
        In production, this would be replaced with actual authorization logic.
        """

        body = ClientWriteRequest(
            writes=[
                ClientTuple(
                    user="user:anne",
                    relation="viewer",
                    object="document:Z",
                ),
            ],
        )
        response = await self.client.write(body)

AttributeError: 'ClientResponse' object has no attribute 'data'