An item renderer optimized for the Menu component.
Menu
1.4.0
index:Int
The index of the item in the data provider of the Menu.
menuBarOwner:MenuBar
The MenuBar that contains this item renderer. A Menu is not required to be added to a MenuBar, so this value may be null`.
MenuBar
MenuBar, so this value may be
menuOwner:Menu
The Menu that contains this item renderer.