code: public static void sendNotification (
          ClientObject target, String receiverCode, int methodId, Object[] args, Transport transport)
      {
          // convert the receiver hash id into the code used on this
          // specific client
          Registration rreg = target.receivers.get(receiverCode);
          if (rreg == null) {
              log.warning("Unable to locate receiver for invocation service notification",
                          "clobj", target.who(), "code", receiverCode, "methId", methodId,
                          "args", args, new Exception());
  
          } else {
  //             log.info("Sending notification", "target", target, "code", receiverCode,
  //                      "methodId", methodId, "args", args);
  
              // create and dispatch an invocation notification event
              target.postEvent(new InvocationNotificationEvent(
                                   target.getOid(), rreg.receiverId, methodId, args).
                               setTransport(transport));
          }
      }
docs: Requests that the specified invocation notification be packaged up and sent to the supplied
  target client.