privacy-settings | Alter Firefox 's built-in privacy settings

in a wagtail project, I need all image and document file URLs to be "private", e.g. to respect the "privacy setting" of the collection that file/instance belongs to. Further, these URLs must be private even if the URL is known/guessable.

For wagtail documents, I've found:
https://docs.wagtail.io/en/stable/reference/settings.html?highlight=sendfile#documents
which works.

I've expected a similar setup/reference for wagtail images, but got:
https://docs.wagtail.io/en/stable/advanced_topics/images/image_serve_view.html#advanced-configuration

I did not manage to successfully implement this image_serve_view-sendfile-configuration.

Anyone knows a way to serve wagtail images the same way as wagtail documents (via the simple setting WAGTAILDOCS_SERVE_METHOD?

I'm OK with the StreamingResponse in case django-sendfile is not installed. I just want my wagtail documents AND images to respect the privacy level defined via the collections privacy setting (e.g. "Private, only accessible for logged-in users").

But even with a more elegant and performant solution via django-sendfile (or a more up-to-date and maintained fork like django-sendfile2) I'm missing documentation which details the steps to implement this setup for wagtail documents and wagtail images.