ass="block">
 <span class="changed_modified_2_2">Remove</span> the listener instance referenced by argument <code>listener</code>
 from the application as a listener for events of type <code>systemEventClass</code>.</div>
</div>
<div class="col-first odd-row-color"><code>void</code></div>
<div class="col-second odd-row-color"><span class="type-name-label">Application.</span><code><a href="../../application/Application.html#unsubscribeFromEvent(java.lang.Class,java.lang.Class,jakarta.faces.event.SystemEventL