* returns false if the provided argument is undefined, otherwise true * @param event the object that should be checked
(event: any)
| 1750 | * @param event the object that should be checked |
| 1751 | */ |
| 1752 | defined(event: any): boolean; |
| 1753 | |
| 1754 | /** |
| 1755 | * deletes all sections from the currently active view |