private static function makeUpdate($bean, $path, $type, $operation)
{
$json = json_encode($bean->export());
return self::$r->_('update', array('operation' => $operation, 'path' => $path, 'type' => $type, 'objectid' => $bean->id, 'object' => $json, 'created' => self::$r->isoDateTime(), 'hash' => sha1($json)), true);
}
