Returns an array of NSString objects containing the names of immutable values that instances of the receiver's class contain.
Original signature is '- (NSArray *)attributeKeys'
Available in Mac OS X v10.0 and later.
![](../icons/collapse_all.gif)
![](../icons/collapse_all.gif)
- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)