protected function _multiSlug(EntityInterface $entity) {
		$label = $this->getConfig('label');
		$field = current($label);
		$fields = (array)$entity->get($field);

		$locale = [];
		foreach ($fields as $locale => $_) {
			$res = null;
			foreach ($label as $field) {
				$res = $entity->get($field);
				if (is_array($entity->get($field))) {
					$res = $this->generateSlug($field[$locale], $entity);
				}
			}

			$locale[$locale] = $res;
		}
		$entity->set($this->getConfig('slugField'), $locale);
	}