So you used a PHP parser to create the first TTS pas file?
Did you use the one at
kind of.. well I didn't use the parser myself, but I can tell you that parser was used to generate the file.
http://www.objectivepascal.com/parser/index.html ?
The site provides you with CocoaAll (MacOS 10.8 SDK) package.
If you download the package and look inside of Cocoa folder. You should find "foundation" directory. Within this file there should be NSUserNotification.inc file generated.
The file should contain the objc class declaration that you're looking for.
(in other words, everything is parsed for you already)