The key in a file attribute dictionary whose value indicates the file's filesystem file number.
The corresponding value is an NSNumber object containing an unsigned long. The value corresponds to the value of st_ino, as returned by stat(2).
Available in Mac OS X v10.0 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)