Java style code into PlayerActivity.kt

Into 4. Create a playlist we have next part of code:

private void initializePlayer() {
[...]
exoPlayer.addMediaItem(mediaItem) // Existing code

val secondMediaItem = MediaItem.fromUri(getString(R.string.media_url_mp3));
exoPlayer.addMediaItem(secondMediaItem);
[...]
}
void and ; into .kt files

Open PlayerActivity.kt and inspect the “4. Create a playlist” section, especially initializePlayer(). Compare the shown Java-style syntax with the Kotlin file and update the void and semicolon usage; the section should contain valid Kotlin code without Java-only syntax.

Written by the indexing model from the issue text.