anchor.diff:    }
   
     /**
  -   * Schedule the send of ClientRequest created by factory function
  +   * Schedule the send of [ClientRequest] created by factory function
      * [createRequest].
      *
      * Request will be created immediately before the send, that makes it possible
  
positive.code:  *      });
   *
   * However, [sendPeriodically] is not supported by [LoopBackTransport], it is
   * not error to call it on the server, however it gets send only when normal
   * [send] is triggered.
   *
   */
  library clean_ajax.client;
  
negative.code:  *        updateInbox(inbox);
   *      });
   *
   * Periodical requests are canceled simply by canceling the subscription to
   * results.
   *
   *      import "package:clean_ajax/client_browser.dart";
   *
   *      var connection = createHttpConnection("http://www.example.com/api/",
   *                                            new Duration(milliseconds: 100));
   *
   *      var subscription = connection.sendPeriodically(
   *          () => new ClientRequest("inbox/get", {})
   *      ).listen((inbox) {
   *        updateInbox(inbox);
   *      });
   *
   *      // Stop sending requests when the inbox is closed by the user.
   *      onInboxClose(() => subscription.cancel());
   *
   * Reusal of code on server is encouraged by [LoopBackTransport] layer, that
   * works on the server.
   *
  