Akka.TestKit.TestScheduler.InternalSchedule C# (CSharp) Method

        private void InternalSchedule(TimeSpan? initialDelay, TimeSpan delay, ICanTell receiver, object message, Action action,
            IActorRef sender, ICancelable cancelable, int deliveryCount = 0)
        {
            var scheduledTime = _now.Add(initialDelay ?? delay).UtcTicks;

            Queue<ScheduledItem> tickItems = null;
            if (!_scheduledWork.TryGetValue(scheduledTime, out tickItems))
            {
                tickItems = new Queue<ScheduledItem>();
                _scheduledWork.TryAdd(scheduledTime, tickItems);
            }
            
            var type = message == null ? ScheduledItem.ScheduledItemType.Action : ScheduledItem.ScheduledItemType.Message;

            tickItems.Enqueue(new ScheduledItem(initialDelay ?? delay, delay, type, message, action,
                initialDelay.HasValue || deliveryCount > 0, receiver, sender, cancelable));
        }