/**
  * Parse simple elements from a SimpleXml node
  * and set them to the given object
  * 
  * @param SimpleXmlElement $xml
  * @param ClassMetadata $metadata
  * @param stdClass $obj
  */
 protected function parseElements(\SimpleXmlElement $xml, ClassMetadata $metadata, $obj)
 {
     foreach ($metadata->getElements() as $name => $property) {
         $value = (string) $xml->{$name};
         $setter = 'set' . ucfirst($property);
         $obj->{$setter}($value);
     }
 }