public static PMML buildSkeletonPMML() {
String formattedDate =
new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZZ", Locale.ENGLISH).format(new Date());
Header header = new Header();
header.setTimestamp(new Timestamp().withContent(formattedDate));
header.setApplication(new Application("Oryx"));
return new PMML(header, null, "4.2.1");
}