Zulip does this: https://github.com/zulip/zulip/blob/main/zerver/models/__init__.py https://github.com/zulip/zulip/blob/main/zerver/models/__ini... Zulip in ge

Zulip does this: https://github.com/zulip/zulip/blob/main/zerver/models/__init__.py https://github.com/zulip/zulip/blob/main/zerver/models/__ini... Zulip in general is a great example of a large open source Django app that's been maintained and actively developed for a long time. I use it as a reference quite a lot.