iTextSharp.text.pdf.PdfReaderInstance.GetFormXObject C# (CSharp) Метод

        internal PdfStream GetFormXObject(int pageNumber, int compressionLevel)
        {
            PdfDictionary page = reader.GetPageNRelease(pageNumber);
            PdfObject contents = PdfReader.GetPdfObjectRelease(page.Get(PdfName.CONTENTS));
            PdfDictionary dic = new PdfDictionary();
            byte[] bout = null;
            if (contents != null) {
                if (contents.IsStream())
                    dic.Merge((PRStream)contents);
                else
                    bout = reader.GetPageContent(pageNumber, file);
            }
            else
                bout = new byte[0];
            dic.Put(PdfName.RESOURCES, PdfReader.GetPdfObjectRelease(page.Get(PdfName.RESOURCES)));
            dic.Put(PdfName.TYPE, PdfName.XOBJECT);
            dic.Put(PdfName.SUBTYPE, PdfName.FORM);
            PdfImportedPage impPage = importedPages[pageNumber];
            dic.Put(PdfName.BBOX, new PdfRectangle(impPage.BoundingBox));
            PdfArray matrix = impPage.Matrix;
            if (matrix == null)
                dic.Put(PdfName.MATRIX, IDENTITYMATRIX);
            else
                dic.Put(PdfName.MATRIX, matrix);
            dic.Put(PdfName.FORMTYPE, ONE);
            PRStream stream;
            if (bout == null) {
                stream = new PRStream((PRStream)contents, dic);
            }
            else {
                stream = new PRStream(reader, bout);
                stream.Merge(dic);
            }
            return stream;
        }

 /**
  * Gets the stream representing this page.
  *
  * @param   compressionLevel    the compressionLevel
  * @return the stream representing this page
  * @since   2.1.3   (replacing the method without param compressionLevel)
  */
 override public PdfStream GetFormXObject(int compressionLevel)
 {
     return(readerInstance.GetFormXObject(pageNumber, compressionLevel));
 }