public static function getLinkableType(aohs\AssetOperationHandlerService $service, $id_string)
 {
     $types = array(Page::TYPE, File::TYPE, Symlink::TYPE);
     $type_count = count($types);
     for ($i = 0; $i < $type_count; $i++) {
         $id = $service->createId($types[$i], $id_string);
         $operation = new \stdClass();
         $read_op = new \stdClass();
         $read_op->identifier = $id;
         $operation->read = $read_op;
         $operations[] = $operation;
     }
     $service->batch($operations);
     $reply_array = $service->getReply()->batchReturn;
     for ($j = 0; $j < $type_count; $j++) {
         if ($reply_array[$j]->readResult->success == 'true') {
             foreach (c\T::$type_property_name_map as $type => $property) {
                 if (isset($reply_array[$j]->readResult->asset->{$property})) {
                     return $type;
                 }
             }
         }
     }
     return "The id does not match any asset type.";
 }