"itemUnselect" listener="#{selectOneView.onUnselect}" />
                    </p:selectOneListbox>
                </div>

                <h5>Advanced</h5>
                <div class="col-12 md:col-6 lg:col-4 xl:col-3">
                    <p:selectOneListbox id="advanced" value="#{selectOneView.country}" converter="#{countryConverter}"
                                        var="c" filter="true" filterMatchMode="contains" filterNormalize="true">
                        <f:selectItems value="#{selectOneVi