static void Main2(string[] args)
{
var myNotificationsEngine = new MyNotificationsEngine();
var localDataCenter = new DataCenter();
var remoteDataCenter = new DataCenter();
var myController = new MyController(
myNotificationsEngine,
localDataCenter,
remoteDataCenter);
//somewhere
myController.HandleMessageFromUser("message");
//somewhere else
myController.HandleReplicatedMessage("message");
}