Ribbon Separator properties
| type | (string) the item type, set it to "separator". If not specified - the "navItem" type is applied by default. |
| id | (string, number) the id of a control, auto-generated if not set |
| type | (string) the item type, set it to "separator". If not specified - the "navItem" type is applied by default. |
| id | (string, number) the id of a control, auto-generated if not set |