MPMediaLibrary 包含用于创建新播放列表的 api:
https://developer.apple.com/documentation/mediaplayer/mpmedialibrary
func getPlaylist(with uuid: UUID, creationMetadata: MPMediaPlaylistCreationMetadata?, completionHandler: @escaping (MPMediaPlaylist?, Error?) -> Void)
但它不包含用于删除播放列表的 api。该动作是如何执行的?