Well, I can do that right now, to see if I understood correctly what you explained before. So the previous flux should have `class FLux < Cask` and the new one should be `class Flux < Cask`?
Also, looking at the previous flux, why do Casks that use "latest" as a version, still have "content_length"? Isn't that impossible to get (like the checksum), since it will vary when there is an update to the app?