public function installOperatingSystemUnattended($vpsName, $operatingSystemName, $base64InstallText)
    {
        return $this->getSoapClient(array_merge(array($vpsName, $operatingSystemName, $base64InstallText), array('__method' => 'installOperatingSystemUnattended')))->installOperatingSystemUnattended($vpsName, $operatingSystemName, $base64InstallText);
    }