public void DelayDereference()
{
FakeFn fn = new FakeFn();
Delay delay = new Delay(fn);
Assert.AreEqual(0, fn.Counter);
object result = delay.Dereference();
Assert.AreEqual(1, result);
object result2 = delay.Dereference();
Assert.AreEqual(1, result);
Assert.AreEqual(1, fn.Counter);
fn.Invoke();
Assert.AreEqual(2, fn.Counter);
}