NServiceBus.InMemoryTimeoutPersister.GetNextChunk C# (CSharp) Method

        public Task<TimeoutsChunk> GetNextChunk(DateTime startSlice)
        {
            var now = currentTimeProvider();
            var nextTimeToRunQuery = DateTime.MaxValue;
            var dueTimeouts = new List<TimeoutsChunk.Timeout>();

            try
            {
                readerWriterLock.EnterReadLock();

                foreach (var data in storage)
                {
                    if (data.Time > now && data.Time < nextTimeToRunQuery)
                    {
                        nextTimeToRunQuery = data.Time;
                    }
                    if (data.Time > startSlice && data.Time <= now)
                    {
                        dueTimeouts.Add(new TimeoutsChunk.Timeout(data.Id, data.Time));
                    }
                }
            }
            finally
            {
                readerWriterLock.ExitReadLock();
            }

            if (nextTimeToRunQuery == DateTime.MaxValue)
            {
                nextTimeToRunQuery = now.Add(EmptyResultsNextTimeToRunQuerySpan);
            }

            return Task.FromResult(new TimeoutsChunk(dueTimeouts.ToArray(), nextTimeToRunQuery));
        }