Glib object_unref

["Marco La Porta" <marco-laporta tiscali it>]

Hi all, 

I'm tryng to use Gdk::PixbufAnimationIter to load an animated gif. 
In the documentation i read that i have to free, after use,  the
Glib::RefPtr<Gdk::PixbufAnimationIter> with Glib:: object_unref.

Where is defined Glib:: object_unref?

Did they mean that i have to use g_ object_unref directly on the RefPtr?

Thanks in Advance

Marco La Porta