><span style="color: #267F99">void</span><span style="color: #000000"> </span><span style="color: #0000FF">=&gt;</span><span style="color: #000000"> {</span>
<span style="color: #000000">        </span><span style="color: #008000">// Update your `roster` object to track the remote video sources state.</span>
<span style="color: #000000">        </span><span style="color: #AF00DB">for</span><span style="color: #000000"> (</span><span style="color: #0000FF">const</span><span style="color: #000000"> </span><sp