Rule for Func and Lazy to be resolved even without requested service registered about dryioc HOT 2 CLOSED

using System;
using DryIoc;				
public class Program
{
	public static void Main()
	{
		var c = new Container();
		c.Register<A>();
		c.RegisterPlaceholder<B>(); // fix part 1
		
		var a = c.Resolve<A>();
		c.Register<B>(ifAlreadyRegistered: IfAlreadyRegistered.Replace); // fix part 2
		
		a.LateResolve();
		
		Console.WriteLine("Hello World");
	}
	
	class A
    {
        private readonly Func<B> _func;

        public A(Func<B> func)
        {
            _func = func;
        }

        public void LateResolve()
        {
            _func();
        }
    }

    class B
    {
    }
}

using System;
using Autofac;
					
public class Program
{
	public static void Main()
	{
		var b = new ContainerBuilder();
		b.RegisterType<A>();
		
		var c = b.Build();		
		
		var a = c.Resolve<A>();
		
		var b2 = new ContainerBuilder();		
		b2.RegisterType<B>();
		
		b2.Update(c);
		
		a.LateResolve();	
	}
}

class A
{
	private readonly Func<B> _func;
	
	public A(Func<B> func)
	{
		_func = func;
	}
	
	public void LateResolve()
	{
		_func();
	}
}

class B
{
}