Deserialize print settings from an a{sv} variant.
The variant must be in the format produced by [method@Gtk.PrintSettings.to_gvariant].
an a{sv} GVariant
a new GtkPrintSettings object
ConstructionException GTK+ fails to create the object.
See Implementation
Deserialize print settings from an a{sv} variant.
The variant must be in the format produced by [method@Gtk.PrintSettings.to_gvariant].