public function createItem()
    {
        if(!\tao_helpers_Request::isAjax()){
            throw new common_exception_BadRequest('wrong request mode');
        }
        $clazz = new \core_kernel_classes_Resource($this->getRequestParameter('id'));
        if ($clazz->isClass()) {
            $clazz = new \core_kernel_classes_Class($clazz);
        } else {
            foreach ($clazz->getTypes() as $type) {
                // determine class from selected instance
                $clazz = $type;
                break;
            }
        }
        $service = \taoItems_models_classes_ItemsService::singleton();

        $label = $service->createUniqueLabel($clazz);
        $item = $service->createInstance($clazz, $label);

        if(!is_null($item)){
            $service->setItemModel($item, new \core_kernel_classes_Resource(ItemModel::MODEL_URI));
            $this->getEventManager()->trigger(new ItemCreatedEvent($item->getUri()));
            $response = array(
                'label'	=> $item->getLabel(),
                'uri' 	=> $item->getUri()
            );
        } else {
            $response = false;
        }
        $this->returnJson($response);
    }