[Zope] Overriding Z Class methods in instances

[Johann Visagie]

This must either be a stupid FAQ, or I'm missing something.

It seems you cannot overload the methods of a Z Class in an instance of that
class.  If you try to, you get a message that the method's id is invalid
since it is already in use.

If this is really the case, then how can one achieve the necessary separation
between presentation and business logic?  E.g. if I have a Z Class with an
index_html method, all instances of that Z Class will display in exactly the
same way.

-- Johann