I got the func

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using StructureMap;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            var container = new Container();
            container.Configure(x =>
            {
                Func<int,int> addFunc = (y) => y + 2;
                x.For<Func<int, int>>().Use(addFunc);
            });

            var foo = container.GetInstance<Foo>();
            var output = foo.DoSomething(2); // Should be 4

            Console.WriteLine(output);
            Console.ReadLine();
        }
    }

    public class Foo
    {
        private readonly Func<int, int> _addFunc;

        public Foo(Func<int, int> addFunc)
        {
            _addFunc = addFunc;
        }

        public int DoSomething(int input)
        {
            return _addFunc(input);
        }
    }
}