timerEvent(eventTag: Integer) updating;
The timerEvent method of the Object class is called by the system when the timer period (armed by using the beginTimer method) expires.
Use the eventTag parameter to identify a specific timer event when the receiver has multiple timers armed.
The eventTag value is registered with the beginTimer method.
Timers are deactivated when the process that armed them terminates. Similarly, notifications are unsubscribed when the process that subscribed to them terminates. As timer events are not transported between nodes, a timer armed in a server method will not invoke the timerEvent callback on the client node.