g it will notify the listener when audio capability changes
 occur. The current audio capabilities will be returned. It is important to call <a href="#unregister()"><code>unregister()</code></a> when the receiver is no longer required.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The current audio capabilities for the device.</dd>
</dl>
</li>
</ul>
<a id="unregister()">
<!--   -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>unregister</h4>
<pre class="methodSignature">pub