using System;

​

public class Program

{

    public static void Main()

    {

        AppleBasket appleBasket = new AppleBasket();

​

        Console.WriteLine(appleBasket is IBasket<Fruit>);

    }

    class Fruit { }

    class Apple : Fruit { }

    interface IBasket<out T> { }

    class FruitBasket : IBasket<Fruit> { }

    class AppleBasket : IBasket<Apple> { }

}