From IRC:
[10:09:37] <Humbedooh> I've personally never used apr_table like described by jchampion_ [10:09:46] <Humbedooh> and I don't believe it's documented? [10:10:15] <Humbedooh> if you want to set a header, you'd use r.headers_out['foo'] = 'bar' [10:10:42] <Humbedooh> so tbh I'd be in favor of just scrapping that bit [10:10:54] <Humbedooh> and fixing the tests to not use it
