plone/Products.Archetypes — comment on commit 79bc6fedee1fd93ebe7ccdccd300ebcd1af44176
File: Products/Archetypes/Field.py line 1456
By malthe:

I have DateTime = 2.12.4, but I just checked the latest Zope 2.10 release, and it definitely does not have a DateTime with this capability.

What should we do? Use it if it's available and log a one-time warning otherwise?