Returns the type of the command argument identified by the specified key.
Original signature is '- (NSString *)typeForArgumentWithName:(NSString *)argumentName'
Available in Mac OS X v10.0 and later.


- argumentName (NSString)
- Argument name (used as a key) that identifies the command argument to examine.

The type of the specified command argument. Returns nil if there is no such argument.

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