def before_app_first_request(self, func: Callable) -> Callable:
        """Add a before request first function to the app.

        This is designed to be used as a decorator, and has the same
        arguments as :meth:`~quart.Quart.before_first_request`. It is
        triggered before the first request to the app this blueprint
        is registered on. An example usage,

        .. code-block:: python

            blueprint = Blueprint(__name__)
            @blueprint.before_app_first_request
            def before_first():
                ...

        """
        self.record_once(lambda state: state.app.before_first_request(func))
        return func