async Task RunForWebRTCDump(
            IEnumerableAsync <WRD.Message[]> inputMessages,
            LogSourcePostprocessorInput postprocessorInput
            )
        {
            IPrefixMatcher matcher     = postprocessing.CreatePrefixMatcher();
            var            logMessages = WRD.Helpers.MatchPrefixes(inputMessages, matcher).Multiplex();

            WRD.IWebRtcStateInspector webRtcStateInspector = new WRD.WebRtcStateInspector(matcher);

            var webRtcEvts = webRtcStateInspector.GetEvents(logMessages);

            matcher.Freeze();

            var events = postprocessorInput.TemplatesTracker.TrackTemplates(EnumerableAsync.Merge(
                                                                                webRtcEvts
                                                                                ));

            var serialize = postprocessing.StateInspector.SavePostprocessorOutput(
                events,
                null,
                evtTrigger => TextLogEventTrigger.Make((WRD.Message)evtTrigger),
                postprocessorInput
                );
            await Task.WhenAll(serialize, logMessages.Open());
        }
        async static Task RunForWebRTCDump(
            IEnumerableAsync <WRD.Message[]> input,
            string outputFileName,
            CancellationToken cancellation,
            ICodepathTracker templatesTracker,
            XAttribute contentsEtagAttr
            )
        {
            IPrefixMatcher matcher     = new PrefixMatcher();
            var            logMessages = WRD.Helpers.MatchPrefixes(input, matcher).Multiplex();

            WRD.IWebRtcStateInspector webRtcStateInspector = new WRD.WebRtcStateInspector(matcher);

            var webRtcEvts = webRtcStateInspector.GetEvents(logMessages);

            matcher.Freeze();

            var events = EnumerableAsync.Merge(
                webRtcEvts
                )
                         .Select(ConvertTriggers <WRD.Message>)
                         .ToFlatList();

            await Task.WhenAll(events, logMessages.Open());

            if (cancellation.IsCancellationRequested)
            {
                return;
            }

            if (templatesTracker != null)
            {
                (await events).ForEach(e => templatesTracker.RegisterUsage(e.TemplateId));
            }

            StateInspectorOutput.SerializePostprocessorOutput(await events, null, contentsEtagAttr).Save(outputFileName);
        }