public function UpdateCustomBranding($enablePrivateBranding = false, $logoUrl = null, $supportLink = null, $privateBrandingUrl = null, $smtpAddress = null, $smtpAlternative = null, $paymentUrl = null) {
        return $this->sendRequest('account/updatecustombranding', array(
                    'enablePrivateBranding' => $enablePrivateBranding,
                    'logoUrl' => $logoUrl,
                    'supportLink' => $supportLink,
                    'privateBrandingUrl' => $privateBrandingUrl,
                    'smtpAddress' => $smtpAddress,
                    'smtpAlternative' => $smtpAlternative,
                    'paymentUrl' => $paymentUrl
        ));
    }