[Vala] Writing objects to files

[Steven Oliver <oliver steven gmail com>]

I want to implement "saving" in my program. The data I want to save is
a custom object. Is it possible in vala to simply write the object to
disk (in binary I assume) without having to implement a to_string
method?

It seems like such a simple concept yet i can't seem to figure out how
to do it in Vala.

Steven N. Oliver