what are all the possible ways to require a beakerlib library?

[sopos]

Currently, beakerlib is able to parse metadata.yaml for libraries written in the form of library(X/Y) and {url: "X", name:"Y"}.

Please give me all the possible ways so I can implement it in beakerlib as well.

[psss]

All supported library combinations should be documented in the require attribute. Let us know if there are any details still missing.