Returns the label of the specified segment
Original signature is '- (NSString *)labelForSegment:(NSInteger)segment'
Available in Mac OS X v10.3 and later.


- segment (NSInteger)
- The index of the segment whose label you want to get. This method raises an NSRangeException if the index is out of bounds.

The label of the segment. The returned string contains the entire text of the label, even if that text is normally truncated during drawing.

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