[Gtk-sharp-list] Serializable TreeStore

[John Luke]

Hello,

I wanted to Serialize a TreeStore and found that neither Gtk.TreeStore
nor GLib.Object are marked as [Serializable].  I then temporarily added
that attribute to each class, but when I serialize the treestore it
doesn't contain all the information that it should. For example, on
deserialization I get an empty treestore.

So should these (and others) be marked [Serializable], and if so how?
(through .custom files or a metadata rule in the generator)

Thanks