// Add advanced options to form in a disclosure panel
DisclosurePanel advancedDisclosure = new DisclosurePanel(
constants.cwDisclosurePanelFormAdvancedCriteria());
advancedDisclosure.setAnimationEnabled(true);
advancedDisclosure.ensureDebugId("cwDisclosurePanel");
advancedDisclosure.setContent(advancedOptions);
layout.setWidget(3, 0, advancedDisclosure);
cellFormatter.setColSpan(3, 0, 2);
// Wrap the contents in a DecoratorPanel