public static function addSystemOut($node)
{
$sys = 'system-out';
if (!empty($node->failure)) {
$node->failure = (string) $node->failure . (string) $node->{$sys};
}
if (!empty($node->error)) {
$node->error = (string) $node->error . (string) $node->{$sys};
}
return $node;
}