macOS BetterAuthorizationSample weird...

I have a quick, newbie question, for programming in cocoa:

I just started looking through authorization services and Apple's BetterAuthorizationSample...

for some reason, I just can't get the hang of it. I was trying to figure out just how the callback and implementation of the helper tool worked, but so far I've gotten very confused.

I deleted the HelperTool and InstallTool and SampleTool.c and all of their references, but why does the program seem to continue work like nothing happened at all (everything was still working) even after a clean build?

Even commenting out all the code in SampleTool.c doesn't seem to affect the way the program runs?

Thanks

Actually, I know why I have this problem now. The helper tool needed to be rebuilt. I did this manually by deleting the helper tool and socket, but I'm not sure if theres a more friendly way of doing so...