@Override
    public void encodeBegin(FacesContext context) throws IOException {
        initState();
        notifyBefore(context, PhaseId.RENDER_RESPONSE);

        if (!context.getResponseComplete()) {
            super.encodeBegin(context);
        }
    }
@ Override public void encodeBegin ( FacesContext context ) throws IOException { initState ( ) ; notifyBefore ( context , PhaseId . RENDER_RESPONSE ) ; if ( ! context . getResponseComplete ( ) ) { super . encodeBegin ( context ) ; } }
<p><span class="changed_added_2_0">Override</span> the default
{@link UIComponentBase#encodeBegin} behavior.  If
{@link #getBeforePhaseListener} returns non-<code>null</code>,
invoke it, passing a {@link PhaseEvent} for the {@link
PhaseId#RENDER_RESPONSE} phase.  If the internal list populated
by calls to {@link #addPhaseListener} is non-empty, any listeners
in that list must have their {@link PhaseListener#beforePhase}
method called, passing the <code>PhaseEvent</code>.  Any errors
that occur during invocation of any of the the beforePhase
listeners must be logged and swallowed.  After listeners are invoked
call superclass processing.</p>