How to get/set 'loved' state in MPMediaItem?

Question

How to get or set 'loved' state in MPMediaItem? I did a lot of searching, but I could not find it.

I tried the following but nothing works:

item["loved"]
item["disliked"]

ref) https://forums.developer.apple.com/thread/18829

In Cesium app, I can get/set 'loved' state.

Answer 1

That's not made available to us. These are the properties made known in Apple's documentation. Anything outside of the static keys defined in that article shouldn't be used in a production app. They may have side-effects, change and not work in future versions, or access private APIs that will cause you to fail your review.