Given the name of a tag expected in the feed or entry used to define this class, return the text in that element.
This can be helpful at getting into fields passed back from Google that arent part of the API provided by Net::Google::PicasaWeb (yet). This is only available for objects created by fetching or listing from Googles API.
If you need something more complex than this, you will need to try to use the twig attribute. However, since that attribute is not guaranteed to exist in a future release, use at your own risk. Personally, Id recommend forking the API on github, patching the code to add the support you want, and submitting a ticket to CPAN RT and beg the author to add it to the next release. If you provide a test, its very likely your patch will be included quickly.