private static object GeneratePageResult(HelpPageSampleGenerator sampleGenerator, Type type)
        {
            if (type.IsGenericType)
            {
                Type openGenericType = type.GetGenericTypeDefinition();
                if (openGenericType == typeof(PageResult<>))
                {
                    // Get the T in PageResult<T>
                    Type[] typeParameters = type.GetGenericArguments();
                    Debug.Assert(typeParameters.Length == 1);

                    // Create an enumeration to pass as the first parameter to the PageResult<T> constuctor
                    Type itemsType = typeof(List<>).MakeGenericType(typeParameters);
                    object items = sampleGenerator.GetSampleObject(itemsType);

                    // Fill in the other information needed to invoke the PageResult<T> constuctor
                    Type[] parameterTypes = new Type[] { itemsType, typeof(Uri), typeof(long?), };
                    object[] parameters = new object[] { items, null, (long)ObjectGenerator.DefaultCollectionSize, };

                    // Call PageResult(IEnumerable<T> items, Uri nextPageLink, long? count) constructor
                    ConstructorInfo constructor = type.GetConstructor(parameterTypes);
                    return constructor.Invoke(parameters);
                }
            }

            return null;
        }

        private static void GenerateSamples(HelpPageApiModel apiModel, HelpPageSampleGenerator sampleGenerator)
        {
            try
            {
                foreach (var item in sampleGenerator.GetSampleRequests(apiModel.ApiDescription))
                {
                    apiModel.SampleRequests.Add(item.Key, item.Value);
                    LogInvalidSampleAsError(apiModel, item.Value);
                }

                foreach (var item in sampleGenerator.GetSampleResponses(apiModel.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}",
                    HelpPageSampleGenerator.UnwrapException(e).Message));
            }
        }

        private static void GenerateRequestModelDescription(HelpPageApiModel apiModel, ModelDescriptionGenerator modelGenerator, HelpPageSampleGenerator sampleGenerator)
        {
            ApiDescription apiDescription = apiModel.ApiDescription;
            foreach (ApiParameterDescription apiParameter in apiDescription.ParameterDescriptions)
            {
                if (apiParameter.Source == ApiParameterSource.FromBody)
                {
                    Type parameterType = apiParameter.ParameterDescriptor.ParameterType;
                    apiModel.RequestModelDescription = modelGenerator.GetOrCreateModelDescription(parameterType);
                    apiModel.RequestDocumentation = apiParameter.Documentation;
                }
                else if (apiParameter.ParameterDescriptor != null &&
                    apiParameter.ParameterDescriptor.ParameterType == typeof(HttpRequestMessage))
                {
                    Type parameterType = sampleGenerator.ResolveHttpRequestMessageType(apiDescription);

                    if (parameterType != null)
                    {
                        apiModel.RequestModelDescription = modelGenerator.GetOrCreateModelDescription(parameterType);
                    }
                }
            }
        }

 /// <summary>
 /// Sets the help page sample generator.
 /// </summary>
 /// <param name="config">The <see cref="HttpConfiguration"/>.</param>
 /// <param name="sampleGenerator">The help page sample generator.</param>
 public static void SetHelpPageSampleGenerator(this HttpConfiguration config, HelpPageSampleGenerator sampleGenerator)
 {
     config.Properties.AddOrUpdate(
         typeof(HelpPageSampleGenerator),
         k => sampleGenerator,
         (k, o) => sampleGenerator);
 }

        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;
        }