event.FacesListener)" class="member-name-link">isAppropriateListener</a><wbr>(<a href="../FacesListener.html" title="interface in jakarta.faces.event">FacesListener</a>&nbsp;listener)</code></div>
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 Returns <code>true</code> if and only if the argument <code>listener</code> is an instance of
 <a href="../SystemEventListener.html" title="interface in jakarta.faces.event"><code>SystemEventListener</code></a>.</div>
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