protected function _save($domain, $singular, $plural = null, $context = null, $refs = null)
    {
        $model = $this->_model();

        foreach ($this->_languages as $locale) {
            $found = $model->find()
                ->where(compact('domain', 'locale', 'singular'))
                ->count();

            if (!$found) {
                $entity = $model->newEntity(compact(
                    'domain',
                    'locale',
                    'singular',
                    'plural',
                    'context',
                    'refs'
                ), ['guard' => false]);

                $model->save($entity);
            }
        }
    }