| actionName | Name of the item. This name will be displayed in the contextual menu. |
| action | Callback to execute when the user selects this item in the menu. |
| actionStatusCallback | Callback to execute to determine the status of the item. |
| atIndex | Index where the item should be inserted. |
Add an item that will execute an action in the contextual menu. The item is added at the end of the specified index in the list.