/// <summary>
        /// Adds a new project to onDemand. Should be used in conjunction with Generate Quote to make a purchase. 
        /// </summary>
        /// <param name="projectName"></param>
        /// <param name="service"></param>
        /// <param name="products"></param>
        /// <param name="options"></param>
        /// <param name="referenceFiles"></param>
        /// <returns></returns>
        public Project AddProject(String projectName, Service service, IEnumerable<Product> products, ProjectOptions options, IEnumerable<File> referenceFiles = null)
        {
            // Check the service
            if (service == null)
            {
                throw new ArgumentNullException("service", "Must specify a Service to add a project");
            }

            // Check the service
            if (service == null)
            {
                throw new ArgumentNullException("service", "Must specify a Service to add a project");
            }

            if (!service.AcceptsProducts)
            {
                throw new ArgumentException("This service does not accept projdcuts.  Please use AddProject with files", "service");
            }

            if (options == null)
            {
                throw new ArgumentNullException("options", "Must specify project options to add a project");
            }

            if (options == null)
            {
                throw new ArgumentNullException("options", "Must specify project options to add a project");
            }

            options.Initialize(this, service);

            Project result = null;

            Uri uri = new Uri(this.EndPoint.AbsoluteUri + "api/projects/add");

            HttpWebRequest request = this.CreateRequestPOST(uri, new AddProject(projectName, products, options, referenceFiles));

            using (HttpWebResponse response = request.GetResponseWithoutException() as HttpWebResponse)
            {
                if (response.StatusCode == HttpStatusCode.Created)
                {
                    using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                    {
                        XDocument document = XDocument.Load(reader);

                        result = new Project(document.Element("Project"), this);
                    }
                }
                else
                {
                    this.HandleError(response);
                }
            }

            return result;
        }
        /// <summary>
        /// Adds a new project to onDemand. Should be used in conjunction with Generate Quote to make a purchase. 
        /// </summary>
        /// <param name="projectName"></param>
        /// <param name="service"></param>
        /// <param name="filePaths"></param>
        /// <param name="options"></param>
        /// <param name="referenceFilePaths"></param>
        /// <returns></returns>
        public Project AddProject(String projectName, Service service, String[] filePaths, ProjectOptions options, String[] referenceFilePaths = null)
        {
            // Check the service
            if (service == null)
            {
                throw new ArgumentNullException("service", "Must specify a Service to add a project");
            }

            if (!service.AcceptsFiles)
            {
                throw new ArgumentException("This service does not accept files.  Please use AddProject with Products", "service");
            }

            if (options == null)
            {
                throw new ArgumentNullException("options", "Must specify project options to add a project");
            }

            options.Initialize(this, service);

            // Check that the file extensions are valid
            foreach (String filePath in filePaths)
            {
                if (!service.AcceptsExtension(Path.GetExtension(filePath)))
                {
                    throw new ArgumentOutOfRangeException("fileNames", filePath, "Service does not accept files with this extension");
                }
            }

            // Upload the files
            List<File> addedFiles = new List<File>();

            foreach (String filePath in filePaths)
            {
                addedFiles.Add(this.AddFile(options.SourceLanguage.LanguageCode, filePath));
            }

            // Upload the reference
            List<File> referenceFiles = null;

            if (referenceFilePaths != null)
            {
                referenceFiles = new List<File>();
                foreach (String referenceFilePath in referenceFilePaths)
                {
                    referenceFiles.Add(this.AddFile(options.SourceLanguage.LanguageCode, referenceFilePath));
                }
            }

            return this.AddProject(projectName, service, addedFiles, options, referenceFiles);
        }