/// <summary>
            /// Add page stamp.	
            /// </summary>
            /// <param name="name">The document name.</param>
            /// <param name="pageNumber">The page number.</param>
            /// <param name="stamp">Stamp object with data.</param>            
            /// <param name="folder">The document folder.</param>
            /// <param name="storage">The document storage.</param>
            public void AddPageStamp(string name, int pageNumber, string folder, PageStamp stamp, string storage = "")
            {
                // PUT 	pdf/{name}/pages/{pageNumber}/stamp?appSid={appSid}&storage={storage}&folder={folder} 

                string apiUrl = string.Format(@"pdf/{0}/pages/{1}/stamp?storage={2}&folder={3}",
                                                name, pageNumber, storage, folder);

                ServiceController.Put(apiUrl, AppSid, AppKey, JsonConvert.SerializeObject(stamp));                
            }
        public void Pdf_Pages_Tests()
        {
            try
            {
                storageService.File.CopyFile(Utils.CloudStorage_Input_Folder + "/pdf-sample.pdf", Utils.CloudStorage_Output_Folder + "/pdf-pages.pdf");
                PagesResponse pagesResponse = pdfService.Pages.ReadDocumentPagesInfo("pdf-pages.pdf", Utils.CloudStorage_Output_Folder);
                System.Threading.Thread.Sleep(3000); // Just for testing
                PagesResponse pagesResponse2 = pdfService.Pages.AddNewPageToEndOfTheDocument("pdf-pages.pdf", Utils.CloudStorage_Output_Folder);
                PageResponse pageResponse = pdfService.Pages.ReadDocumentPageInfo("pdf-pages.pdf", 1, Utils.CloudStorage_Output_Folder);
                System.Threading.Thread.Sleep(3000); // Just for testing

                pdfService.Pages.ConvertToSomeFormat("pdf-pages.pdf", 1, PDFPageConvertFormat.Png, Utils.Local_Output_Path + "\\pdf-page-out.png", Utils.CloudStorage_Output_Folder);
                WordsPerPageResponse wordsPerPageResponse = pdfService.Pages.GetNumberOfWordsPerDocumentPage("pdf-sample.pdf", Utils.CloudStorage_Input_Folder);
                System.Threading.Thread.Sleep(3000); // Just for testing

                pdfService.Pages.DeleteDocumentPageByItsNumber("pdf-pages.pdf", 1, Utils.CloudStorage_Output_Folder);
                pdfService.Pages.MovePageToNewPosition("pdf-pages.pdf", 1, 3, Utils.CloudStorage_Output_Folder);

                System.Threading.Thread.Sleep(3000); // Just for testing

                //---------------------------------------------------------------------

                storageService.File.CopyFile(Utils.CloudStorage_Input_Folder + "/pdf-sample.pdf", Utils.CloudStorage_Output_Folder + "/pdf-pages.pdf");

                PDFSignature signature = new PDFSignature();
                signature.SignaturePath = Utils.CloudStorage_Input_Folder + "/signature.pfx";
                signature.SignatureType = "PKCS7";
                signature.Password = "******";
                signature.Appearance = Utils.CloudStorage_Input_Folder + "/signature.jpg";
                signature.Reason = "Success";

                signature.Contact = "*****@*****.**";
                signature.Location = "Australia";
                signature.Visible = true;
                signature.FormFieldName = "Signature1";
                signature.Authority = "Aspose Marketplace";
                signature.Rectangle = new Rectangle(100, 100, 200, 200);
                signature.Date = DateTime.Now.ToString();

                pdfService.Pages.SignPage("pdf-pages.pdf", 1, Utils.CloudStorage_Output_Folder, signature);

                //---------------------------------------------------------------------
                System.Threading.Thread.Sleep(3000); // Just for testing
                storageService.File.CopyFile(Utils.CloudStorage_Input_Folder + "/pdf-sample.pdf", Utils.CloudStorage_Output_Folder + "/pdf-pages.pdf");

                PageStamp stamp = new PageStamp();
                stamp.Type = 0;
                stamp.Background = true;
                stamp.BottomMargin = 2.1;
                stamp.HorizontalAlignment = 0;
                stamp.LeftMargin = 3.1;
                stamp.Opacity = 4.1;
                stamp.RightMargin = 5.1;
                stamp.Rotate = 0;
                stamp.RotateAngle = 6.1;
                stamp.TopMargin = 7.1;
                stamp.VerticalAlignment = 0;
                stamp.XIndent = 8.1;
                stamp.YIndent = 9.1;
                stamp.Zoom = 10.1;
                stamp.TextAlignment = 0;
                stamp.Value = "sample string 11";

                Color backGroundColor = new Color(64, 64, 64, 64);
                TextState textState = new TextState();
                textState.BackgroundColor = backGroundColor;
                textState.ForegroundColor = backGroundColor;
                textState.FontSize = 12;
                textState.Font = "Tahoma";
                textState.FontStyle = 1;
                stamp.TextState = textState;

                stamp.FileName = Utils.CloudStorage_Input_Folder + "/signature.jpg";
                stamp.Width = 13.1;
                stamp.Height = 14.1;
                stamp.PageIndex = 1;
                stamp.StartingNumber = 1;

                System.Threading.Thread.Sleep(3000); // Just for testing

                pdfService.Pages.AddPageStamp("pdf-pages.pdf", 1, Utils.CloudStorage_Output_Folder, stamp);

                System.Threading.Thread.Sleep(3000); // Just for testing

                storageService.File.DownloadFile(Utils.CloudStorage_Output_Folder + "/pdf-pages.pdf", Utils.Local_Output_Path + "/pdf-pages.pdf");
            }
            catch (Exception ex)
            {
                Assert.Fail(ex.Message);
            }
        }