public static function enumerationToJson($name)
 {
     $enumeration = new self();
     $enumeration->populateByEnumerationName($name);
     $enumerationsClosure = new EnumerationsClosure();
     $enumerationIterator = $enumerationsClosure->getAllDescendants($enumeration->enumerationId, 1);
     return $enumerationIterator->toJsonArray('enumerationId', array('name'));
 }