Returns a Source that fetches and extract an archive into the work directory md5 can be specified with an md5 checksum to check integrity of the downloaded archive
Returns a Source pointing to a local directory within $DUB_PACKAGE
Returns a Source that will clone a git repo and checkout a specified commit. commitRef can be a branch, tag, or commit hash. Anything git checkout will understand.
Returns a Source pointing to a local existing directory
Source code interface