dex="-1"></a>  <span class="at">fontface =</span> <span class="st">"bold"</span></span>
<span id="cb27-6"><a href="#cb27-6" aria-hidden="true" tabindex="-1"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<p>So here’s our process:</p>
<ol type="1">
<li>Use <code>as_group()</code> to convert the four polygon layers into a single group.</li>
<li>Use <code>as_reference()</code> to register that group as a filter.</li>
<li>Use <code>