protected function postKeyToLaravelForgeServer($keyName=null)
    {
        $keyName ? $keyName : $this->getUniqueKeyNameFromEmail();
        return $this->http->post($this->url,
            [
                'form_params' => [
                    'name' => $keyName,
                    'key' => file_get_contents($_SERVER['HOME'] . self::SSH_ID_RSA_PUB)
                ],
                'headers' => [
                    'X-Requested-With' => 'XMLHttpRequest',
                    'Authorization' => 'Bearer ' . fp_env('ACACHA_FORGE_ACCESS_TOKEN')
                ]
            ]
        );
    }