Marten.Events.Projections.Async.Fetcher.FetchNextPage C# (CSharp) Method

        public async Task<EventPage> FetchNextPage(long lastEncountered)
        {
            EventPage page = null;

            await _errorHandler.TryAction(async () =>
            {
                page = await fetchNextPage(lastEncountered).ConfigureAwait(false);
            }, _track).ConfigureAwait(false);

            return page;
        }

        public async Task smoke_test_able_to_fetch_a_page_of_events()
        {
            var list = new List<MembersJoined>();

            for (int i = 0; i < 500; i++)
            {
                list.Add(new MembersJoined {Day = i, Location = Guid.NewGuid().ToString(), Members = new string[] {Guid.NewGuid().ToString()}});
            }

            using (var session = theStore.LightweightSession())
            {
                session.Events.Append(Guid.NewGuid(), list.ToArray());
                await session.SaveChangesAsync().ConfigureAwait(false);
            }

            var options = new AsyncOptions();
            var settings = new DaemonSettings
            {
                LeadingEdgeBuffer = 0.Seconds()
            };

            using (var data = new Fetcher(theStore, settings, options, Substitute.For<IDaemonLogger>(), new StubErrorHandler(), new Type[] {typeof(MembersJoined)}))
            {
                var page = await data.FetchNextPage(0).ConfigureAwait(false);

                page.From.ShouldBe(0);
                page.To.ShouldBe(options.PageSize);

                page.Streams.SelectMany(x => x.Events).Count().ShouldBe(100);
            }
        }