private void validateXML(ApplicationPackage applicationPackage, boolean ignoreValidationErrors) {
        try {
            applicationPackage.validateXML();
        } catch (IllegalArgumentException e) {
            rethrowUnlessIgnoreErrors(e, ignoreValidationErrors);
        } catch (Exception e) {
             throw new RuntimeException(e);
        }
    }
Returns the version this model is build for
config-model/src/main/java/com/yahoo/vespa/model/VespaModelFactory.java