</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">
 Handle a notification that the processing for a particular phase of the request processing lifecycle is about to
 begin.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../../../jakarta/faces/event/PhaseId.html" title="class in jakarta.faces.event">PhaseId</a></code></div>