flickraw: flickr.tags.getListUserRaw


I need to call the flickr.tags.getListUserRaw API method
with the flickraw gem.

Unfortunately there is no documentation how to authenticate and then
call the method. Just calling flickr.tags.getListUserRaw doesn't work,
although flickr.tags.getListUser does work.

I set my FlickRaw.api_key and FlickRaw.shared_secret ... how do I go
about now?