public class RelayAutofacInitializer : IAutofacInitializer
    {
        private readonly IAutofacInitializer _autofacInitializer;
        private readonly Action<ContainerBuilder> _init;

        public RelayAutofacInitializer(IAutofacInitializer autofacInitializer, Action<ContainerBuilder> init)
        {
            _autofacInitializer = autofacInitializer;
            _init = init;
        }

        public void RegisterDependenciesForContainer(ContainerBuilder containerBuilder)
        {
            if (_autofacInitializer != null) _autofacInitializer.RegisterDependenciesForContainer(containerBuilder);

            if (_init != null)
                _init(containerBuilder);

        }

        public void InitializeUsingContainer(ILifetimeScope container)
        {
            if (_autofacInitializer != null) _autofacInitializer.InitializeUsingContainer(container);
        }
    }



    public interface IAutofacInitializer
    {
        void RegisterDependenciesForContainer(ContainerBuilder containerBuilder);
        void InitializeUsingContainer(ILifetimeScope container);
    }


    public class CompositeRoot
    {
        private readonly ILifetimeScope _container;

        private CompositeRoot(ILifetimeScope container)
        {
            _container = container;
        }

        public static void Init(IAutofacInitializer initializer = null)
        {
            var builder = new ContainerBuilder();

            if(initializer != null)
                initializer.RegisterDependenciesForContainer(builder);

            var container = builder.Build();
            
            if(initializer != null)
                initializer.InitializeUsingContainer(container);

            var root = new CompositeRoot(container);
            Instance = root;
        }

        public static CompositeRoot Instance { get; private set; }

        public CompositeRoot CreateChild(string name, IAutofacInitializer initializer)
        {
            ILifetimeScope lifetimeScope = _container.BeginLifetimeScope(initializer.RegisterDependenciesForContainer);
            
            initializer.InitializeUsingContainer(lifetimeScope);

            var root = new CompositeRoot(lifetimeScope);
	  return root;
            
        }

        public void PerformOnChildScopeUsingCustomInit(IAutofacInitializer initializer, Action<ILifetimeScope> @delegate)
        {
            using (var lifetimeScope = _container.BeginLifetimeScope(initializer.RegisterDependenciesForContainer))
            {
                initializer.InitializeUsingContainer(lifetimeScope);
                @delegate(lifetimeScope);
            }           
        }

        public T Resolve<T>()
        {
            return _container.Resolve<T>();
        }
    }