[Issue 18623] Documented unittest should not allow private symbol access

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18623

--- Comment #6 from greenify <greeenify at gmail.com> ---
FWIW the tools extractor that is used by Phobos is now on dub:

https://code.dlang.org/packages/dtools

dub fetch dtools
dub run dtools:tests_extractor

--