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<h4>renderColumnGroups</h4>
<pre>protected&nbsp;void&nbsp;renderColumnGroups(<a href="../../../../../javax/faces/context/FacesContext.html" title="class in javax.faces.context">FacesContext</a>&nbsp;context,
                                  <a href="../../../../../javax/faces/component/UIComponent.html" title="class in javax.faces.component">UIComponent</a>&nbsp;table)
                           throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-