To the best of my knowledge, the `@api` tag is specifically to indicate to external users if they can use that code or not, but as before, I am not on your team, so I don't know what standard y'all are using.  I would, however, assume that I was one hundred percent legit in calling any method y'all marked API private from any code I wrote without asking y'all.

As to the breakage ... it may not be broken any longer, and if you are certain of that no need to add the caveat, obviously. :)