malaba/appledoc — comment on commit 89da7869e7e50478dd919c6ef58ffe330db69ed8
File:  line 0
By malaba:

OK, AvailabilityMacros.h is another thing.

Availability.h (lines ~89 to ~105) is what we need.
In the end:

#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070