:)  That what I started from, but then I thought that `cached_class_property` meant that there were class_property and we were going to cache it.   So, IMO it's better to say that we're caching property in class (to share cached value among instances) then to confuse users (class_property sounds very similar to classmethod).  BTW I don't like cached_in_class_property - but I didn't think up anything better :(