hread_runner.ThreadListenerRunner.listener_completion_handler"><code class="name">var <span class="ident">listener_completion_handler</span> : <a title="slack_bolt.listener.listener_completion_handler.ListenerCompletionHandler" href="listener_completion_handler.html#slack_bolt.listener.listener_completion_handler.ListenerCompletionHandler">ListenerCompletionHandler</a></code></dt>
<dd>
<div class="desc"><p>The type of the None singleton.</p></div>
</dd>
<dt id="slack_bolt.listener.thread_runner.ThreadListe