def normalise_optional_params(parameters: Iterable[Any]) -> Tuple[(Any, ...)]:
    none_cls = type(None)
    return (tuple((p for p in parameters if (p is not none_cls))) + (none_cls,))
def normalise_optional_params(parameters: Iterable[Any]) -> Tuple[(Any, ...)]:
    none_cls = type(None)
    return (tuple((p for p in parameters if (p is not none_cls))) + (none_cls,))