glib/menu.go
func (v *Menu) InsertSectionWithoutLabel(position int, section *MenuModel) {
	C.g_menu_insert_section(v.native(), C.gint(position), nil, section.native())
}
func (v *Menu) InsertSectionWithoutLabel(position int, section *MenuModel) {
	C.g_menu_insert_section(v.native(), C.gint(position), nil, section.native())
}
// InsertSectionWithoutLabel is a wrapper around g_menu_insert_section()
// with label set to null.