RE: [Zope] Set _allowed_meta_types on folder instances without creating a new product?

Jeff Kowalczyk writes:

... And it's returning '_allowed_meta_types changed to Image Folder on Images', so the call seems to be succeeding. However, the folder Images still shows the full metatype list when I return to it. Am I missing something? I told you how to define "_allowed_meta_types" on a per instance basis but did not check that "_allowed_meta_types" has the desired effect.

When your message above arrived, I tried to find a use of "_allowed_meta_types", but the Zope sources do not reference it. Where do you know about it? Dieter