public function addAutomaticallyUpdatedFields(array $automaticallyUpdatedFields) {
        $fields = $this->getAutomaticallyUpdatedFields();
        foreach($automaticallyUpdatedFields as $field) {
            if(!in_array($field, $fields)) {
                $fields[] = $field;
            }
        }
        $this->setAutomaticallyUpdatedFields($fields);
    }