public function createDomain($domainName, $bandwidthLimit = null, $diskLimit = null, $ssl = null, $php = null, $cgi = null)
    {
        $domain = Domain::create($this->getSelfManagedUser(), $domainName, $bandwidthLimit, $diskLimit, $ssl, $php, $cgi);
        $this->clearCache();
        return $domain;
    }