ep-ms-connector.kt

override fun onCreate(savedInstanceState: Bundle?) {
    ...
    mediaSession = MediaSessionCompat(this, packageName)
    connector = MediaSessionConnector(mediaSession)
    // If QueueNavigator isn't set, then mediaSessionConnector won’t handle
    // MediaSession actions (they won't show up in the minimized PIP activity):
    // [ACTION_SKIP_PREVIOUS], [ACTION_SKIP_NEXT], [ACTION_SKIP_TO_QUEUE_ITEM]
    connector.setQueueNavigator(object : TimelineQueueNavigator(mMediaSession) {
        override fun getMediaDescription(idx: Int): MediaDescriptionCompat {
            return MediaCatalog.list.get(idx)
        }
    })
}

object MediaCatalog {
    val list = mutableListOf<MediaDescriptionCompat>()
    init {
        list.add(
                with(MediaDescriptionCompat.Builder()) {
                    setDescription("MP4 loaded from assets folder")
                    setMediaId("1")
                    setMediaUri(Uri.parse("asset:///video/...video.mp4"))
                    setTitle("Stock footage")
                    setSubtitle("Local video")
                    build()
                })
        list.add(
                with(MediaDescriptionCompat.Builder()) {
                    setDescription("MP3 loaded over HTTP")
                    setMediaId("2")
                    setMediaUri(Uri.parse("http://storage.../play.mp3"))
                    setTitle("Spoken track")
                    setSubtitle("Streaming audio")
                    build()
                })
        list.add(...)
    }
}

Just stumbled across this reading the medium article -> It's kinda redundant to wrap a Java Builder in Kotlin's "with" stdlib function, isn't it?