Elastica\Search::_validateOption PHP Méthode

    protected function _validateOption($key)
    {
        switch ($key) {
            case self::OPTION_SEARCH_TYPE:
            case self::OPTION_ROUTING:
            case self::OPTION_PREFERENCE:
            case self::OPTION_VERSION:
            case self::OPTION_TIMEOUT:
            case self::OPTION_FROM:
            case self::OPTION_SIZE:
            case self::OPTION_SCROLL:
            case self::OPTION_SCROLL_ID:
            case self::OPTION_SEARCH_TYPE_SUGGEST:
            case self::OPTION_SEARCH_IGNORE_UNAVAILABLE:
            case self::OPTION_QUERY_CACHE:
            case self::OPTION_TERMINATE_AFTER:
                return true;
        }
        throw new InvalidException('Invalid option ' . $key);
    }