Yes that's right, I actually added a method directly to (our fork) of
AFNetworking. As far as I could tell it was unavoidable. This method
allows us to set a UIImageView with the response to a URL request, and
get back the raw NSData of that request at the same time, so that we can
save the JPG to disk without having to recompress it (as we would if we
used UIImageJPEGRepresentation.