Ignore the <attribute> element in any other XML element
Ignore the <attribute> element in any other XML element

It is added by newer versions of gobject-introspection in various
places.

EPashkin/gir,GuillaumeGomez/gir,gtk-rs/gir,gtk-rs/gir,gtk-rs/gir,GuillaumeGomez/gir,EPashkin/gir,GuillaumeGomez/gir