Arguments that should be passed to the command. They will be as rest parameters.
Command that should be associated with the menu item. All menu item should have a command associated with them unless they are a sub-menu.
Menu item label. If not specified, the command label will be used instead.
Menu items that should appear below this menu item. Allows creating a menu tree.
Set to "separator" to create a divider line
Accelerator associated with the menu item