API to update Room management Content Library?

I’m looking for an API that allows updating background images for the Room Management Content Library. I’m aware of (and use) the API for updating the background images for the desktop client, and that doesn’t do what I need.

I’d like to be able to programmatically update the images in the folder structure for the Zoom Rooms background images. I don’t see an obvious API to do this but wanted to check here to see if I’ve missed something.