Download the unused, private download strategies. These are a better fit for being declared in the formulae and/or taps that use them rather than in Homebrew/brew where they are unused by Homebrew maintainers or official taps/formulae.
Library
This directory contains all the code run by the official brew and brew cask commands in Homebrew and all formulae (package descriptions) in taps (repositories containing formulae) in Taps subdirectories.