>addQueueListener</a></span><span class="signature">(<wbr><span class="parameter" id="addQueueListener-param-listener"><span class="type-annotation"><a href="../async_queue/QueueListener.html">QueueListener</a></span> <span class="parameter-name">listener</span></span>)
    <span class="returntype parameter">&#8594; void</span>
  </span>
  

</dt>
<dd>
  Queue listener, emit event that indicate state of the queue
  

</dd>

        <dt id="clear" class="callable">
  <span class="name"><a href="../async_queu