Missing API reference for `DatabaseSessionService`

[olliefr]

The API Reference for google.adk.sessions module no longer mentions DatabaseSessionService at all.

I think this has to do with lazy loading of DatabaseSessionService:

src/google/adk/sessions/__init__.py

I have a feeling that your docs generator fails to comprehend the deferred import (via __getattr__) but it's not my area of expertise, really, so it's just a guess.

[koverholt]

Thanks for the issue! Agree that this looks related to lazy loading of modules.

We generate API docs from the Python library and then vendor them into this repo to be served with the rest of the ADK docs.

Since this would need to be fixed in the upstream adk-python repo, I'll transfer this issue there, where they can investigate this see if there is a fix for the missing DatabaseSessionService info in their API docs config / generation process.