Desrialize a page setup from an a{sv} variant.
The variant must be in the format produced by gtk.page_setup.PageSetup.toGvariant.
an a{sv} glib.variant.VariantG
a new gtk.page_setup.PageSetup object
Desrialize a page setup from an a{sv} variant.
The variant must be in the format produced by gtk.page_setup.PageSetup.toGvariant.