mentException</a></code> - if the argument is <code>null</code>.</dd>
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<h4>PreClearFlashEvent</h4>
<pre>public&nbsp;PreClearFlashEvent(<a href="../../../javax/faces/context/FacesContext.html" title="class in javax.faces.context">FacesContext</a>&nbsp;facesContext,
                          <a href="https://docs.oracle.com/javase/8/docs/api/java/util