Update rosters by XML-RPC?


I need to add and update users and their rosters according to their subscription and friendships on my site. I found user service plugin, which let’s me manage users, but I can’t find a way to update their rosters. Is there a way to do this with user service or some other plugin?

BTW, where can I find the source code for user service plugin to add this feature to it if no ready solution was found?
cm_license_change.patch.zip (13866 Bytes)