protected void showSelectAllOption() {
final PHorizontalPanel panel = new PHorizontalPanel();
panel.setHorizontalAlignment(PHorizontalAlignment.ALIGN_CENTER);
panel.setStyleName("pony-ComplexList-OptionSelectionPanel");
final PLabel label = new PLabel("All " + rowSelectors.size() + " items on this page are selected.");
final int fullSize = findResult.getFullSize();
panel.add(label);
if (fullSize > complexListConfiguration.getPageSize()) {
final PAnchor anchor = new PAnchor("Select all " + fullSize + " final items in Inbox");
anchor.addClickHandler(new PClickHandler() {