[Zope] old instances and new versions of their classes

[Chris McDonough]

> Is there any way to get existing instances to recognize new or changed
methods (or class variables) of their classes?  (I'm not interested in
regular instance variables here, just methods and class variables.)

This happens automatically.  Nothing special besides a Zope restart needs be
done to make instances "notice" shared instance (class) variables and
methods when you're coding a disk-based product.