Extended attributes?

[miturbe]

Hello,
I am writing a piece of code which converts Google Contacts XML
(http://code.google.com/apis/contacts/docs/3.0/
developers_guide_protocol) into Open social XML.

The Google specs have a property called ExtendedProperty, example
<gd:extendedProperty name='pet' value='hamster' />

Is there anything like that within PortableContacts?

Thanks for the info.

Regards
Marcelo