I use YYY to mean "look at this before I land", usually actual detail about what I wanted to look at.

Thanks for asking, because in this case, it meant I wanted to be sure that an AppPort was in fact the kind of port that GoogleContact() was expecting.

I've just checked this, and it is.  However, it also made me realize that I didn't do the rename inside of google.js and its tests.  So I'll do that!