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