public JourneyViewModel BuildPreviousQuestion(QuestionWithAnswers lastStep, JourneyViewModel model)
        {
            model.RemoveLastStep();

            model.CollectedKeywords = _keywordCollector.CollectKeywordsFromPreviousQuestion(model.CollectedKeywords,
                                                                                            model.Journey.Steps);

            return(_mappingEngine.Mapper.Map(lastStep, model));
        }