https://github.com/github/copilot-sdk/blob/main/python/copilot/generated/__init__.py Makes it clear that the copilot.generated subpackage is not meant to be public:

But the subpackage doesn't start with an underscore to signify it's an implementation detail: copilot._generated.

As well, https://github.com/github/copilot-sdk/blob/main/python/copilot/rpc.py and https://github.com/github/copilot-sdk/blob/main/python/copilot/session_events.py which are meant to act as the public API potentially over-expose things. While copilot.rpc does export something explicitly:

... both files also do an import * followed by an import of __all__ from the generated code which lists everything contained in the generated code. E.g.:

exposes 330 symbols in the module:

I'm not sure if all 330 symbols are meant to be exposed, but at least copilot.generated should be made private by renaming it to copilot._generated. If all of those symbols are meant to be exposed then that one-liner in copilot.rpc might as well be removed. If they are not meant to be exposed then the import __all__ and import * should go and you can explicitly set __all__ in the exporting modules.