do more work with classes from pytypes.h (especially for STL container casting)
diff --git a/example/example4.ref b/example/example4.ref
index 9be2bdc..040d55b 100644
--- a/example/example4.ref
+++ b/example/example4.ref
@@ -10,7 +10,7 @@
 None
 test_function(enum=2)
 None
-<class 'Example4.EMode'>
+<class 'example.EMode'>
 EMode.EFirstMode
 EMode.EFirstMode
 Example4::test_function(enum=1)