public function getMainContentClasses(array $additionalClasses = null): string
    {
        $classes = ['controller'];
        if (!empty($additionalClasses)) {
            $classes = Hash::merge($classes, $additionalClasses);
        }
        $classes[] = Inflector::underscore($this->_View->request->controller) . '-' . Inflector::underscore($this->_View->request->action);

        return h(implode(' ', $classes));
    }