n the returned stream.</li><li>If the call returns <code>null</code>, no further action is taken for the elements.</li><li>Otherwise, this stream is paused and convert-stream is listened to.
Every data and error event of the convert-stream is emitted on the returned
stream in the order it is produced.
When the convert-stream ends, this stream is resumed.</li></ul>
<p>The returned stream is a broadcast stream if this stream is.</p>
    </section>
    
    <section class="summary source-code" id="source">
   