public function getPDFProxy($pdfBaseUrl)
    {
        if (!Environment::getEnv('CWP_SECURE_DOMAIN')
            || $pdfBaseUrl == Environment::getEnv('CWP_SECURE_DOMAIN') . '/'
        ) {
            $proxy = '';
        } else {
            $proxy = ' --proxy ' . Environment::getEnv('SS_OUTBOUND_PROXY')
                . ':' . Environment::getEnv('SS_OUTBOUND_PROXY_PORT');
        }
        return $proxy;
    }