Gtk.Activatable.prototype.sync_action_properties

function sync_action_properties(action:Gtk.Action):void {
    // Gjs wrapper for gtk_activatable_sync_action_properties()
}

This is called to update the activatable completely, this is called internally when the Gtk.related-action property is set or unset and by the implementing class when Gtk.use-action-appearance changes.

Since 2.16