/div>
</div>
<div id="warnings-and-messages" class="section level2">
<h2 class="hasAnchor">
<a href="#warnings-and-messages" class="anchor"></a>warnings and messages</h2>
<p>The <code><a href="reference/messagehandler.html">stop_if()</a></code>, <code><a href="reference/messagehandler.html">warn_if()</a></code> and <code><a href="reference/messagehandler.html">message_if()</a></code> are easy to use functions that send an error, a warning or a message if a condition is met. Each function has its counterpart