Creating a custom Lint Java Detector

I'm trying to create a custom rule for Lint that would be a twist on existing deprecation warning tests.

Thing is the documentation I have read so far tells me really little about how to implement a class (that I think needs to be) implementing Detector.JavaScanner

http://ift.tt/1fFUn2h

This is a fairly general question I guess, but anyone knowledgeable of this issue, or where I could find actually useful documentation on the matter?

Thanks!