Returns the interval between the receiver and another given date.
Original signature is '- (NSTimeInterval)timeIntervalSinceDate:(NSDate *)anotherDate'
Available in Mac OS X v10.0 and later.


- anotherDate (NSDate)
- The date with which to compare the receiver.

The interval between the receiver and anotherDate. If the receiver is earlier than anotherDate, the return value is negative.

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