The numeric part of these ids is never used on it's own. There is no
need to expose it.
Note we renamed the method not long ago in I6eeab8b to reflect better
what it does. This is the next step. We just forgot it back then.
Change-Id: I5da82855e99ea3a42a5d91379c6974ae9c154518
It's not a getter, but a generator. I found the name confusing.
Getters typically don't return something different every time you
call them.
Change-Id: I6eeab8b6a8644e430003f6e1ad77ab4b28e0d8c9