iTextSharp.text.pdf.richmedia.RichMediaAnnotation.AddAsset C# (CSharp) Метод

        public PdfIndirectReference AddAsset(String name, PdfFileSpecification fs)
        {
            if (assetsmap == null)
                throw new IllegalPdfSyntaxException("You can't add assets to reused RichMediaContent.");
            PdfIndirectReference refi = writer.AddToBody(fs).IndirectReference;
            assetsmap[name] = refi;
            return refi;
        }

 // ---------------------------------------------------------------------------
 public void Write(Stream stream)
 {
     // step 1
       using (Document document = new Document()) {
     // step 2
     PdfWriter writer = PdfWriter.GetInstance(document, stream);
     writer.SetPdfVersion(PdfWriter.PDF_VERSION_1_7);
     writer.AddDeveloperExtension(
       PdfDeveloperExtension.ADOBE_1_7_EXTENSIONLEVEL3
     );
     // step 3
     document.Open();
     // step 4
     // we prepare a RichMediaAnnotation
     RichMediaAnnotation richMedia = new RichMediaAnnotation(
       writer, new Rectangle(36, 400, 559,806)
     );
     // we embed the swf file
     PdfFileSpecification fs = PdfFileSpecification.FileEmbedded(
       writer, RESOURCE, "FestivalCalendar1.swf", null
     );
     // we declare the swf file as an asset
     PdfIndirectReference asset = richMedia.AddAsset(
       "FestivalCalendar1.swf", fs
     );
     // we create a configuration
     RichMediaConfiguration configuration = new RichMediaConfiguration(
       PdfName.FLASH
     );
     RichMediaInstance instance = new RichMediaInstance(PdfName.FLASH);
     RichMediaParams flashVars = new RichMediaParams();
     String vars = "&day=2011-10-13";
     flashVars.FlashVars = vars;
     instance.Params = flashVars;
     instance.Asset = asset;
     configuration.AddInstance(instance);
     // we add the configuration to the annotation
     PdfIndirectReference configurationRef = richMedia.AddConfiguration(
       configuration
     );
     // activation of the rich media
     RichMediaActivation activation = new RichMediaActivation();
     activation.Configuration = configurationRef;
     richMedia.Activation = activation;
     // we add the annotation
     PdfAnnotation richMediaAnnotation = richMedia.CreateAnnotation();
     richMediaAnnotation.Flags = PdfAnnotation.FLAGS_PRINT;
     writer.AddAnnotation(richMediaAnnotation);
       }
 }