Fritz Box TR064-Binding - Support for phonebook pics

Before I create an official improvement issue for the Fritzbox TR064 binding I would be interested to know if someone of you guys have already a solution to somehow be able to get the phonebook pic for an incoming call (as far as the phonebook pic has been provided in the appropriate phonebook on the Fritzbox).
Getting this information via TR064 protocol should be possible. As far as I know you get here a local path on the Fritzbox pointing to the phonebook pic. This local path can be used in an appropriate Fritzbox URL to get access to the pic: