olygon without points, an empty multi-geometry.
        </p>
<h6>
<a name="geometry.reference.exceptions.centroid_exception.h1"></a>
          <span><a name="geometry.reference.exceptions.centroid_exception.synopsis"></a></span><a class="link" href="centroid_exception.html#geometry.reference.exceptions.centroid_exception.synopsis">Synopsis</a>
        </h6>
<p>
</p>
<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">centroid_exception</span>
      <span class="special">: