using System;
 
public class Test {
 
    interface MyInterface { }
    delegate void MyFuncType<in InType>(InType input);
 
    class MyClass<T> where T : MyInterface
    {
        public void callDelegate(MyFuncType<MyInterface> func)
        {
            MyFuncType<T> castFunc1 = (MyFuncType <T>) func; //Error
            MyFuncType<T> castFunc2 = func as MyFuncType<T>; 
            MyFuncType<T> castFunc3 = func is MyFuncType<T> ? (MyFuncType<T>)func : (MyFuncType<T>)null; //Error
        }
    }
 
    public static void Main()
    {
        Console.WriteLine("hello");
    }
}

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