objective c - How to create NSHTTPURLResponse with a specific status code in 10.6 -

is possible create nshttpurlresponse instance specific status code in mac os x 10.6?

i know about

- (instancetype)initwithurl:(nsurl *)url                  statuscode:(nsinteger)statuscode                 httpversion:(nsstring *)httpversion                headerfields:(nsdictionary *)headerfields 

but available starting 10.7. ideas how accomplish in 10.6?