human
I wrote the below code

    name = config.get(CONF_NAME)
    lights = config.get(CONF_LIGHTS)
    start_time = config.get(CONF_START_TIME)
    stop_time = config.get(CONF_STOP_TIME)
    start_colortemp = config.get(CONF_START_CT)
    sunset_colortemp = config.get(CONF_SUNSET_CT)
    stop_colortemp = config.get(CONF_STOP_CT)
    brightness = config.get(CONF_BRIGHTNESS)
    disable_brightness_adjust = config.get(CONF_DISABLE_BRIGTNESS_ADJUST)
    mode = config.get(CONF_MODE)
    flux = FluxSwitch(name, hass, False, lights, start_time, stop_time, start_colortemp, sunset_colortemp, stop_colortemp, brightness, disable_brightness_adjust, mode)
    add_devices([flux])
    def update(call=None):
        'Update    lights.'
        flux.flux_update()
    service_name = slugify('{}    {}'.format(name, 'update'))
    hass.services.register(DOMAIN, service_name, update)

What's a good function header?

Here's a good function header?
assistant
#Here's a good function header.

def setup_platform(hass, config, add_devices, discovery_info=None):