iTextSharp.text.pdf.PdfStamper.MarkUsed C# (CSharp) Метод

        public void MarkUsed(PdfObject obj)
        {
            stamper.MarkUsed(obj);
        }

 public void TrimPDFFile(Stream outputStream, Stream inputStream, PageLayout pageLayout)
 {
     using (var reader = new PdfReader(inputStream))
     {
         var inputPageSize = reader.GetPageSize(1);
         var inputPage = reader.GetPageN(1);
         inputPage.Put(PdfName.MEDIABOX, new PdfRectangle(PageLayoutA4.GetLabelRect(0)));
         using (var stamper = new PdfStamper(reader, outputStream))
         {
             stamper.Writer.CloseStream = false;
             stamper.MarkUsed(inputPage);
         }
     }
 }