:</span></dt>
<dd><code>timeline</code> - The current <a href="Timeline.html" title="class in com.google.android.exoplayer2"><code>Timeline</code></a> in ExoPlayer. Can be <a href="Timeline.html#EMPTY"><code>Timeline.EMPTY</code></a> only
     when the deprecated <a href="#onTracksSelected(com.google.android.exoplayer2.Renderer%5B%5D,com.google.android.exoplayer2.source.TrackGroupArray,com.google.android.exoplayer2.trackselection.ExoTrackSelection%5B%5D)"><code>onTracksSelected(Renderer[], TrackGroupArray,
