private static void CallVirtOpcodeGenericInterfaceGenericMethod()
        {
            Console.WriteLine("Testing callvirt opcode for calling generic method on DIM on generic interface");
            I1 <string> c1 = new C1();

            if (c1.GetItemTypeMethod <object>() != typeof(object))
            {
                throw new Exception("CallVirtOpcodeGenericInterfaceGenericMethod failed");
            }
        }