Thanks for this! I've been developing a standalone watchOS app and was wondering what that iOS target was for. I deleted it a while ago and though I can find the lines corresponding to the "iOS wrapper" in the .pbxproj file in the source control history, there doesn't seem to be an easy way to add this target back to my project short of creating a new standalone watch project and transferring everything over

^ That's for the enumeration, the documentation for MPNowPlayingInfoCenter's playbackState instance property specifies it's only for MacOS under Discussion: "This property only applies to macOS. You must set this property every time the app begins or halts playback, otherwise remote control functionality may not work as expected." https://developer.apple.com/documentation/mediaplayer/mpnowplayinginfocenter/2588243-playbackstate