code: func (menu *Menu) SetApplicationMenu() {
  	command := Command{
  		Method: "set_application_menu",
  		Args: CommandArguments{
  			MenuID: menu.TargetID,
  		},
  	}
  
  	// Thread to wait for Stable Menu State
  	menu.CallWhenTreeStable(&command)
  }
docs: /*
  SetApplicationMenu sets the Application Menu on system that support global application level menus such as x11, unity, darwin
  */