Opc.Ua.Server.ObjectSource.SubscribeToEvents C# (CSharp) Method

        public void SubscribeToEvents(
            OperationContext    context, 
            object              notifier, 
            uint                subscriptionId,
            IEventMonitoredItem monitoredItem,
            bool                unsubscribe)
        {
            lock (DataLock)
            {
                if (unsubscribe)
                {
                    Unsubscribe(monitoredItem);
                }
                else
                {
                    Subscribe(monitoredItem);
                }
            }
        }