Failed to generate docs for module device: ValueError('invalid method signature')

[EternityForest]

Describe the bug:

Generating docs fails with no real indication of what the issue is.

Expected behaviour:

A reference to the specific bad method.

Steps to reproduce the issue:

The failure was on this repo: https://github.com/EternityForest/iot_devices/commit/8a63394550cb3bf4d1f7561a4e6c32031961d724

But I suspect the actual error itself is on my end and the issue is just with a lack of clarity in the error message.

[github-actions[bot]]

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