static void Main(string[] args)
{
BasicConfigurator.Configure();
var dm = new DeviceManager("192.168.1.200");
//register notifcation service
Slack s = Slack.TryFromCCU(dm);
if (s != null)
{
dm.RegisterNotificationService(s);
}
var t1 = s.SendTextMessageAsync("message from Slack()");
var t2 = dm.SendNotificationAsync("message from DeviceManager()");
Task.WaitAll(t1, t2);
}