private static string LifecycleSingleton() {
    var singleton = new LifecycleSingleton().Container;
    var classX = (ClassX) singleton.GetInstance<IClassX>();

    classX.Increase();
    Console.WriteLine(classX.Counter);

    classX = (ClassX) singleton.GetInstance<IClassX>();

   classX.Increase();
   Console.WriteLine(classX.Counter);

   return "done";
}