 the value."</span></a></code></pre></div>
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<div id="none-all-any" class="section level3">
<h3 class="hasAnchor">
<a href="#none-all-any" class="anchor"></a>none, all, any</h3>
<p><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> all have complementary tests with <code>_all</code>, <code>_any</code> and <code>_none</code>, which combine the <cod