def set_filters(self, can_filers=None):
        """Unsupported. See note on :class:`~can.interfaces.ixxat.IXXATBus`.
        """
        if self.__set_filters_has_been_called:
            log.warn("using filters is not supported like this, see note on IXXATBus")
        else:
            # allow the constructor to call this without causing a warning
            self.__set_filters_has_been_called = True