private function getConfigPermissionOperations($class = null, $field = null)
    {
        $map = $this->getMapConfigPermissions();
        $class = PermissionUtils::getMapAction($class);
        $field = PermissionUtils::getMapAction($field);
        $operations = [];

        if (isset($map[$class][$field])) {
            $operations = array_keys($map[$class][$field]);
        }

        return $operations;
    }