public function getChildType($child)
 {
     if ($child == 'required') {
         return 'PageRelationshipGenerateTemplate_Required';
     }
     return parent::getChildType($child);
 }
 public function getChildType($child)
 {
     if ($child == 'fields') {
         return 'PageXMLRelationship_FormFields';
     }
     return parent::getChildType($child);
 }