Deselects all selected groups, records, and values in multivalue properties.
Original signature is '- (void)deselectAll:(id)sender'
Available in Mac OS X v10.3 and later.


- sender (Id)
- The object sending this message.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)