def METHOD_NAME(self, brightness):
    """
    Set the device's brightness
    """
    self.logger.debug("DBus call set_scroll_brightness")
    driver_path = self.get_driver_path('scroll_led_brightness')
    self.method_args['brightness'] = brightness
    if brightness > 100:
        brightness = 100
    elif brightness < 0:
        brightness = 0
    self.set_persistence("scroll", "brightness", int(brightness))
    brightness = int(round(brightness * (255.0 / 100.0)))
    with open(driver_path, 'w') as driver_file:
        driver_file.write(str(brightness))
    # Notify others
    self.send_effect_event('setBrightness', brightness)