def add_app_template_filter(self, func: Callable, name: Optional[str]=None) -> None:
        """Add an application wide template filter.

        This is designed to be used on the blueprint directly, and
        has the same arguments as
        :meth:`~quart.Quart.add_template_filter`. An example usage,

        .. code-block:: python

            def filter():
                ...

            blueprint = Blueprint(__name__)
            blueprint.add_app_template_filter(filter)
        """
        self.record_once(lambda state: state.register_template_filter(func, name))
Add an application wide template filter.

        This is designed to be used on the blueprint directly, and
        has the same arguments as
        :meth:`~quart.Quart.add_template_filter`. An example usage,

        .. code-block:: python

            def filter():
                ...

            blueprint = Blueprint(__name__)
            blueprint.add_app_template_filter(filter)