[Zope] How to find out whether index_html was acquired?

[Hamish Lawson]

I'm wondering whether there is a way to determine whether the 
index_html method was found in the current folder or was acquired 
from a folder above.

The motivation for this is a situation like so: Suppose there is a 
folder 'Acme' with subfolders 'Engineering', 'Marketing' 
and 'Accounts'. I'd like the index_html for the subfolders to be 
similar, so I would put it in Acme to be acquired. However I want the 
index_html for the Acme folder itself to be different from the 
subfolders. Therefore I'm thinking I could rename the index_html for 
the subfolders to be index_sub_html, create an index_self_html for 
use by the Acme folder, and then have index_html determine whether it 
was acquired and show either index_self_html or index_sub_html as 
appropriate. Would this be the right approach?

Hamish Lawson