How to use Document Writer to Save Document with Annotations

var memoryStream = new MemoryStream();
var docWriter = new DocumentWriter();

var pdfOptions = docWriter.GetOptions(DocumentFormat.Pdf) as PdfDocumentOptions;
pdfOptions.DocumentType = PdfDocumentType.PdfA;
docWriter.SetOptions(DocumentFormat.Pdf, pdfOptions);
docWriter.BeginDocument(memoryStream, DocumentFormat.Pdf);

//copy annotation and resize
using RasterCodecs doccodecs = new RasterCodecs();
doccodecs.Options.Load.Name = $"anything.pdf";
var docoriginalImage = doccodecs.Load(files[0]);
var docinfo = doccodecs.GetInformation(files[0], true);

RasterImage docfullFileImage = null;

var docannCodecs = new AnnCodecs();
var docannContainer = new AnnContainer();
var docrenderingEngine = new AnnDrawRenderingEngine();
for (int j = 1; j <= docoriginalImage.PageCount; j++)
{
    var page = new DocumentWriterSvgPage();
    //page.SvgDocument = doccodecs.LoadSvg(files[0], j, null);
    //docWriter.AddPage(page);
    //page.SvgDocument.Dispose();

    RasterImage image = doccodecs.Load(files[0], docinfo.BitsPerPixel, CodecsLoadByteOrder.BgrOrGrayOrRomm, j, j);
    docannContainer = docannCodecs.Load(annotationFile, j);
    var height = image.ImageHeight * (720 / (double)image.YResolution);
    var width = image.ImageWidth * (720 / (double)image.XResolution);
    docannContainer.Resize(new LeadSizeD(width, height), AnnResizeContainerFlags.ResizeObjects, AnnResizeMode.Stretch);
    docannCodecs.Save(@$"{currentPath}\4-45-resized.xml", docannContainer, AnnFormat.Annotations, 1);

    if (docfullFileImage is null)
    {
        var temp = docannContainer is null ? image : docrenderingEngine.RenderOnImage(docannContainer, image);
        page.Image = temp;
        docfullFileImage = temp;
    }
    else
    {
        var temp = docannContainer is null ? image : docrenderingEngine.RenderOnImage(docannContainer, image);
        page.Image = temp;
        docfullFileImage.AddPage(temp);
    }

    docWriter.AddPage(page);
    page.Image.Dispose();
}

docWriter.EndDocument();

// save the document writer stream
using var fileStream = File.Create(@$"{currentPath}\docwriterresize.pdf");
memoryStream.Seek(0, SeekOrigin.Begin);
memoryStream.CopyTo(fileStream);
            
// save using raster codecs
doccodecs.Save(docfullFileImage ?? docoriginalImage, @$"{currentPath}\resize.pdf", RasterImageFormat.RasPdfLzw, 0, 1, docoriginalImage.PageCount, 1, CodecsSavePageMode.Append);

            for (int i = 1; i <= totalPages; i++)
            {
               var page = new DocumentWriterRasterPage();

               RasterImage image = codecs.Load(inputFileName, info.BitsPerPixel, CodecsLoadByteOrder.BgrOrGrayOrRomm, i, i);
               docannContainer = docannCodecs.Load(annFile, i);
               RasterImage tempImage = docrenderingEngine.RenderOnImage(docannContainer, image);
               page.Image = tempImage;
               docWriter.AddPage(page);
               page.Image.Dispose();
            }
         }
         docWriter.EndDocument();

         // save the document writer stream
         using var fileStream = File.Create(@"C:\Temp\docwriterresize.pdf");
         memoryStream.Seek(0, SeekOrigin.Begin);
         memoryStream.CopyTo(fileStream);