Returns a new string made by appending to the receiver an extension separator followed by a given extension.
Original signature is '- (NSString *)stringByAppendingPathExtension:(NSString *)ext'
Available in Mac OS X v10.0 and later.


- ext (NSString)
- The extension to append to the receiver.

A new string made by appending to the receiver an extension separator followed by ext.

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