iTextSharp.text.pdf.fonts.cmaps.CMapToUnicode.AddChar C# (CSharp) Method

        internal override void AddChar(PdfString mark, PdfObject code)
        {
            byte[] src = mark.GetBytes();
            String dest = CreateStringFromBytes(code.GetBytes());
            if (src.Length == 1) {
                singleByteMappings[src[0] & 0xff] = dest;
            } else if (src.Length == 2) {
                int intSrc = src[0] & 0xFF;
                intSrc <<= 8;
                intSrc |= src[1] & 0xFF;
                doubleByteMappings[intSrc] = dest;
            } else {
                throw new IOException(MessageLocalization.GetComposedMessage("mapping.code.should.be.1.or.two.bytes.and.not.1", src.Length));
            }
        }

 private void CheckInsertAndRetrieval(byte[] bytes, string uni)
 {
     CMapToUnicode c = new CMapToUnicode();
     c.AddChar(new PdfString(bytes), new PdfString(uni, "UTF-16BE"));
     string lookupResult = c.Lookup(bytes, 0, bytes.Length);
     Assert.AreEqual(uni, lookupResult);
 }