Docs: App Router docs for gracefully handling shutdowns still requires pages/_document.js

What is the improvement or update you wish to see?

The docs for NextJS using the App Router for Manual graceful shutdowns use the pages/_document.js file to handle shutdown signals, though my project doesn't even have a pages/ directory anymore now that everything is moved over to App Router.

The migration docs from the Pages to App Router even has a section on getting rid of the _document.js file, so I would assume this is not supposed to be the way moving forward. Am I wrong?

Is it still the "proper" way to handle this, or is there some other App Router-native method of handling shutdown signals? Thanks!

Is there any context that might help us understand?

I posted a discussion about this but figured that this might be a useful docs improvement (or maybe a missing piece of functionality with the App Router).

Does the docs page already exist? Please link to it.

https://nextjs.org/docs/app/building-your-application/deploying#manual-graceful-shutdowns

_DX-1692