Expectation:
the docs section for camera:attach lists its arguments
Reality:
listed function signature and examples use zero argument. No mentions are present in the description that this is a variadic function taking up to 5 arguments.
Proposed solution:
If the docs are automatically generated, the site only needs to be rebuilt. It they're manually generated, it should be a straightforward PR (though there seems to be some question about whether this repo is actually maintained).
ed: looks like there's already a (2 year old) PR #120 that I hadn't seen before posting this issue.