using System;

using System.Threading.Tasks;

using System.Runtime.CompilerServices;

public class Program

{

    public static void Main()

    {

        var p = new Program();

        p.RunDemo().GetAwaiter().GetResult();

    }

    // the actual demo

    public async Task RunDemo()

    {

        var sac = new SomeAwaitableClass();

        await sac;

        Console.WriteLine(sac.Prop1);

    }

}

​

public class SomeAwaitableClass

{

    public string Prop1 { get; set; }

​

    public TaskAwaiter GetAwaiter()

    {

        return Task.Run(async () => 

        {

            await Task.Delay(2000);

            Prop1 = $"I am initialized now! ({DateTimeOffset.Now})";

        }).GetAwaiter();

    }

}