 class="ident">func</span> : Callable[..., bool]</code></dt>
<dd>
<div class="desc"><p>The type of the None singleton.</p></div>
</dd>
<dt id="slack_bolt.listener_matcher.custom_listener_matcher.CustomListenerMatcher.logger"><code class="name">var <span class="ident">logger</span> : logging.Logger</code></dt>
<dd>
<div class="desc"><p>The type of the None singleton.</p></div>
</dd>
</dl>
<h3>Inherited members</h3>
<ul class="hlist">
<li><code><b><a title="slack_bolt.listener_matcher.listener_matcher.List