nautilus and gio and linux

["Peter F. Patel-Schneider" <pfps verizon net>]

I've trace the dependence of nautilus back to the newish gio system and 
I think I've found where in gio nautilus is determining that a volume is 
ejectable.

However, I'm stuck on the next step.  Where do I go to see how the(?) 
linux interface for gio determines whether a volume is ejectable?

Peter F. Patel-Schneider