@verbatim
root
+-- public-package
- | +- public-package-0.1.tar.gz.sha256
+ | +- public-package-0.1.tar.gz.md5
+ | +- public-package-0.1.1.tar.gz.sha256
| +- public-package-0.2.tar.gz
| +- public-package-0.2.tar.gz.asc
| +- public-package-0.2.tar.gz.sha256