/**
  * Ensure that a given property is not set as an xml-value.
  *
  * @param oldProperty
  * @param tInfo
  */
 private void unsetXmlValue(Property oldProperty, TypeInfo tInfo) {
   oldProperty.setIsXmlValue(false);
   if (tInfo.isSetXmlValueProperty()
       && tInfo.getXmlValueProperty().getPropertyName().equals(oldProperty.getPropertyName())) {
     tInfo.setXmlValueProperty(null);
   }
 }