Menu.newFromModel

Creates a #GtkMenu and populates it with menu items and submenus according to model.

The created menu items are connected to actions found in the #GtkApplicationWindow to which the menu belongs - typically by means of being attached to a widget (see [gtk.menu.Menu.attachToWidget]) that is contained within the #GtkApplicationWindows widget hierarchy.

Actions can also be added using [gtk.widget.Widget.insertActionGroup] on the menu's attach widget or on any of its parent widgets.