iTextSharp.text.pdf.DocumentFont.ProcessToUnicode C# (CSharp) Метод

        private CMapToUnicode ProcessToUnicode()
        {
            CMapToUnicode cmapRet = null;
            PdfObject toUni = PdfReader.GetPdfObjectRelease(this.font.Get(PdfName.TOUNICODE));
            if (toUni is PRStream) {
                try {
                    byte[] touni = PdfReader.GetStreamBytes((PRStream)toUni);
                    CidLocationFromByte lb = new CidLocationFromByte(touni);
                    cmapRet = new CMapToUnicode();
                    CMapParserEx.ParseCid("", cmapRet, lb);
                } catch {
                    cmapRet = null;
                }
            }
            return cmapRet;
        }