private static async Task LoopStepAsync()

in SDKV4-Samples/dotnet_core/DialogInterruptionsBot/DialogInterruptionsBot.cs [440:485]
35 lines of code
6 McCabe index (conditional complexity)

        private static async Task<DialogTurnResult> LoopStepAsync(
            WaterfallStepContext stepContext,
            CancellationToken cancellationToken)
        {
            // Retrieve their selection list and the choice they juat made.
            List<string> list = stepContext.Values[CompaniesSelected] as List<string>;
            FoundChoice choice = (FoundChoice)stepContext.Result;

            // Handle any local, expected interruptions appropriately.
            switch (choice.Value)
            {
                case Interruptions.Finish:
                    // Exit and return their current selection list.
                    return await stepContext.EndDialogAsync(list, cancellationToken);
                case Interruptions.Cancel:
                    // Exit and return null.
                    return await stepContext.EndDialogAsync(null, cancellationToken);
                case Interruptions.Help:
                    // Dispaly the help options.
                    await stepContext.Context.SendActivityAsync(
                        Interruptions.HelpText,
                        cancellationToken: cancellationToken);
                    break;
                case Interruptions.MoreInfo:
                    // Display more information about the companies.
                    await stepContext.Context.SendActivityAsync(
                        Companies.MoreInfo,
                        cancellationToken: cancellationToken);
                    break;
                default:
                    // If they chose a company, add it to the list.
                    list.Add(choice.Value);
                    break;
            }

            if (list.Count is 2)
            {
                // If they've selected 2 companies to review, exit and return their list.
                return await stepContext.EndDialogAsync(list, cancellationToken);
            }
            else
            {
                // Otherwise, repeat this dialog, passing in the list from this iteration.
                return await stepContext.ReplaceDialogAsync(ReviewSelectionDialog, list, cancellationToken);
            }
        }