 with two Duration entries : <code>'progress'</code> and <code>'duration'</code>.
Remark : actually only implemented on iOS.</p>
<p><em>Example:</em></p>
<pre class="language-dart"><code class="language-dart">        Duration progress = (await getProgress())['progress'];
        Duration duration = (await getProgress())['duration'];
</code></pre>
<hr>
</section>


    
<section class="summary source-code" id="source">
  <h2><span>Implementation</span></h2>
  <pre class="language-dart"><code class="language-