private function _clanById(string $param): Clan
    {
        $curlClient = curl_init(
            self::BASE_URL .
            self::CLANS_URL .
            '/' .
            \urlencode($param)
        );
        curl_setopt($curlClient, CURLOPT_HTTPHEADER, $this->_curlHeader);
        curl_setopt($curlClient, CURLOPT_RETURNTRANSFER, true);
        $result = json_decode(curl_exec($curlClient), true);
        return Clan::create($result);
    }