require(WidgetScriptModules.BASE_AJAX, protocol, attributes);
require(WIDGET_VALIDATOR, protocol, attributes);
// Add new Multiple Validator instance to the builder.
MultipleValidatorAttributes validatorAttributes = (MultipleValidatorAttributes) attributes;
// This should never be null and should cast properly.
WidgetDefaultModule widgetModule = (WidgetDefaultModule) protocol.getWidgetModule();
MultipleValidatorBuilder builder = widgetModule.getMultipleValidatorBuilder();