public function initDefaultConfig()
{
// defaults for the local computer
$rolesConfig = new BaseObject();
$rolesConfig->roles = ['*'];
$config =& $this->newConfig('localhost')->getConfig();
$config->groups = new BaseObject();
$config->groups->{'0'} = new BaseObject();
$config->groups->{'0'}->type = "Blackboxes";
$config->groups->{'0'}->details = new BaseObject();
$config->groups->{'0'}->details->machines = [$rolesConfig];
// all done
}