private static void LogInvalidSampleAsError(HelpPageApiModel apiModel, object sample)
 {
     InvalidSample invalidSample = sample as InvalidSample;
     if (invalidSample != null)
     {
         apiModel.ErrorMessages.Add(invalidSample.ErrorMessage);
     }
 }
        private static HelpPageApiModel GenerateApiModel(ApiDescription apiDescription,
            HelpPageSampleGenerator sampleGenerator)
        {
            HelpPageApiModel apiModel = new HelpPageApiModel();
            apiModel.ApiDescription = apiDescription;

            try
            {
                foreach (var item in sampleGenerator.GetSampleRequests(apiDescription))
                {
                    apiModel.SampleRequests.Add(item.Key, item.Value);
                    LogInvalidSampleAsError(apiModel, item.Value);
                }

                foreach (var item in sampleGenerator.GetSampleResponses(apiDescription))
                {
                    apiModel.SampleResponses.Add(item.Key, item.Value);
                    LogInvalidSampleAsError(apiModel, item.Value);
                }
            }
            catch (Exception e)
            {
                apiModel.ErrorMessages.Add(String.Format(CultureInfo.CurrentCulture,
                    "An exception has occurred while generating the sample. Exception Message: {0}", e.Message));
            }

            return apiModel;
        }