--- a/appobject.py	Thu Oct 15 11:20:23 2009 +0200
+++ b/appobject.py	Thu Oct 15 11:20:26 2009 +0200
@@ -251,7 +251,7 @@
         the right hook to create an instance for example). By default the
         appobject is returned without any transformation.
         """
-        try:
+        try: # XXX < 3.6 bw compat
             pdefs = cls.property_defs
         except AttributeError:
             pdefs = getattr(cls, 'cw_property_defs', {})