specControl.setReturnValue(l);
replayControls();
EnhancementOperationImpl eo = new EnhancementOperationImpl(new DefaultClassResolver(),
spec, GetClassReferenceFixture.class, new ClassFactoryImpl());
// This does two things; it creates a new field, and it sets up a new constructor
// parameter to inject the class value (Map.class) into each new instance.
String ref = eo.getClassReference(Map.class);