| type | (string) the type of a control, set it to "selectButton". If not specified - the "navItem" type is applied by default. |
| id | (string, number) the id of a control, auto-generated if not set |
| parent | (string) the parent of the item |
| value | (string) the value of the button |
| css | (string|string[]) adds style classes to a button |
| icon | (string) the name of an icon from the used icon font |
| items | (array) an array of nested controls. You can find the full list of all available controls here. If the type of a nested control is not specified, the menuItem type will be applied by default. |
| size | (string) defines the size of a button: "small"|"medium"|"auto" |
| count | (number) a badge with a number |
| countColor | (string) the color of a badge with number: "danger" | "secondary" | "primary" | "success" |
| tooltip | (string) a tooltip for the control |
| hidden | (boolean) defines whether a button is hidden |
| disabled | (boolean) defines whether a button is disabled |