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