private function _clansMembersOnly(string $param): array
    {
        $curlClient = curl_init(
            self::BASE_URL .
            self::CLANS_URL .
            '/' .
            \urlencode($param) .
            '/members'
        );
        curl_setopt($curlClient, CURLOPT_HTTPHEADER, $this->_curlHeader);
        curl_setopt($curlClient, CURLOPT_RETURNTRANSFER, true);
        $results = json_decode(curl_exec($curlClient), true);
        $members = [];
        foreach ($results['items'] as $result) {
            $members[] = Player::create($result);
        }
        return $members;
    }