Mvc Web API on TopShelf

sample1.cs

using System;
using System.Web.Http;
using System.Web.Http.SelfHost;
using Topshelf;

namespace MvcOnTopShelf
{
    class Program
    {
        static void Main(string[] args)
        {
            HostFactory.Run(x =>
            {
                x.Service<RestService>(s =>
                {
                    s.ConstructUsing(name => new RestService("http://localhost:2020"));
                    s.WhenStarted(svc => svc.Start());
                    s.WhenStopped(svc => svc.Stop());
                });
                x.RunAsLocalSystem();
                x.SetDescription("My rest service");
                x.SetDisplayName("My rest service");
                x.SetServiceName("RestService");
            });
        }
    }

    public class RestService
    {
        private readonly HttpSelfHostServer server;
        private readonly HttpSelfHostConfiguration config;

        public RestService(string baseAddress)
        {
            config = new HttpSelfHostConfiguration(baseAddress);
            config.Routes.MapHttpRoute("DefaultApi", "api/{controller}/{id}", new { id = RouteParameter.Optional });
            server = new HttpSelfHostServer(config);
        }

        public void Start()
        {
            server.OpenAsync();
        }

        public void Stop()
        {
            server.CloseAsync();
            server.Dispose();
        }
    }

    public class AccountController : ApiController
    {
        [HttpGet]
        public string Get(int id)
        {
            return Guid.NewGuid().ToString();
        }
    }
}

where is AccountController configured?