private fun initBridgeList() {
    CoroutineScope(Dispatchers.Main).launch {
        // you can get bridge list in your network
        val bridgeList = BridgeManager().getBridgeList()
    }
}

private fun fetchLightList() {
    val bridgeIp = Bridge.internalIpAddress
    val lightController = BridgeController(bridgeIp)
    
    CoroutineScope(Dispatchers.Main).launch {
        try {
            // if you click the link button, you can get a token!
            token: String = lightController.getToken()
            ...
        } catch (exception: Exception) {
            // it will throw UnClickBridgeLinkButtonException
            // if you have not clicked the bridge link button
            // so if the exception is thrown, you should deliver the message like "click the bridge button"
        }
    }
}

CoroutineScope(Dispatchers.Main).launch {
    val lightList:List<Light> = lightController.getLights(token)
}

CoroutineScope(Dispatchers.Main).launch {
    //you can get light id from Light.kt
    lightController.turnOn(token, lightId, turnOn)
}

// use ColorInt
CoroutineScope(Dispatchers.Main).launch {
    lightController.changeColor(
        token,
        lightId,
        //ColorInt
        selectColor
    )
}
// use RGB
CoroutineScope(Dispatchers.Main).launch {
    lightController.changeRGBColor(
        token,
        lightId,
        red = Color.red(colorInt)
        green = Color.green(colorInt)
        blue = Color.blue(colorInt)
    )
}
// use HSV
CoroutineScope(Dispatchers.Main).launch {
    val hsv = FloatArray(3)
    
    Color.colorToHSV(Color.rgb(red, green, blue), hsv)
    val brightness = (hsv[2] * 255).toInt()
    val saturation = (hsv[1] * 255).toInt()
    val hue = ((hsv[0] * 65535) / 360).toInt()
    
    lightController.changeHSVColor(
        token,
        lightId,
        hue = hue,
        saturation = saturation,
        brightness = brightness
    )
}