using System;

​

public class Program

{

    public static void Main()

    {

        ((IFoo)new Foo()).M();

    }

}

​

interface IFoo

{

    int I

    {

        get;

        set;

    }

​

    public void M()

    {

        Console.WriteLine("foo");

    }

}

class Foo : IFoo

{

    public int I { get; set; }

}