public function getColumnNames(GetPropertyOptionsEvent $event)
    {
        if (!$this->isBackendOptionRequestFor($event, ['tag_column', 'tag_alias', 'tag_sorting'])) {
            return;
        }

        $result = $this->getColumnNamesFrom($event->getModel()->getProperty('tag_table'));

        if (!empty($result)) {
            \asort($result);
            $event->setOptions($result);
        }
    }