Returns a textual representation of the receiver.
Original signature is '- (NSString*) descriptionWithFormat:(NSString*) format'
- format (NSString)
- The format of the description string.
NSString containing a textual representation of the object utilizing the specified format.
- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)