Gtk.ActionGroup.prototype.set_translate_func

function set_translate_func(func:Gtk.TranslateFunc):void {
    // Gjs wrapper for gtk_action_group_set_translate_func()
}

Sets a function to be used for translating the @label and @tooltip of Gtk.ActionEntry<!-- -->s added by Gtk.add_actions.

If you're using gettext(), it is enough to set the translation domain with Gtk.set_translation_domain.

Since 2.4