public void TestStaticInterfaceCast()
{
IAdder adder = DuckTyping.StaticCast <IAdder>(typeof(StaticAdder));
Assert.AreEqual(4, adder.Add(2, 2));
Assert.AreEqual(4, adder.LastTotal);
adder.LastTotal = 15;
Assert.AreEqual(15, adder.LastTotal);
}