Returns the maximum length of time that may have elapsed since the store previously fetched data before fulfilling a fault issues a new fetch rather than using the previously-fetched data.
Original signature is '- (NSTimeInterval)stalenessInterval'
Available in Mac OS X v10.4 and later.


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