I have the following code which exports to a PNG format.  I want to export to Bitmap but I cannot find the NBitmapEncoderSettings class to reference.  How can I use the coding method below to export to a bitmap?

// Configure the decoder
    NPngEncoderSettings ImgPngEncoder = new NPngEncoderSettings();
    ImgPngEncoder.ColorType = ENPngColorType.TrueColorWithAlpha;
    ImgPngEncoder.CompressionLevel = Nevron.Nov.Compression.ENCompressionLevel.BestCompression;

    // Export To Stream
    NDrawingRasterImageExporter ImgRasterExporter = new Nevron.Nov.Diagram.Export.NDrawingRasterImageExporter((Nevron.Nov.Diagram.NDrawingDocument)DrawNOV.View.Content.OwnerDocument);
    ImgRasterExporter.SaveToStream(MemStrPng, ImgRasterExporter.GetDocumentContentBounds(), 300, NImageFormat.Png, ImgPngEncoder);

    MemStrPng.Position = 0;

    // Save To file
    MemStrPng.WriteTo(new FileStream(@"C:\AD_ATF\AD15.png", FileMode.Create));