private function __construct()
{
// initialize the array with the runlevels
$this->runlevels = array('shutdown' => ApplicationServerInterface::SHUTDOWN, 'administration' => ApplicationServerInterface::ADMINISTRATION, 'daemon' => ApplicationServerInterface::DAEMON, 'network' => ApplicationServerInterface::NETWORK, 'secure' => ApplicationServerInterface::SECURE, 'full' => ApplicationServerInterface::FULL, 'reboot' => ApplicationServerInterface::REBOOT);
}