iTextSharp.text.pdf.PdfSmartCopy.ByteStore.SerObject C# (CSharp) Метод

            private void SerObject(PdfObject obj, int level, ByteBuffer bb)
            {
                if (level <= 0)
                    return;
                if (obj == null) {
                    bb.Append("$Lnull");
                    return;
                }
                obj = PdfReader.GetPdfObject(obj);
                if (obj.IsStream()) {
                    bb.Append("$B");
                    SerDic((PdfDictionary)obj, level - 1, bb);
                    if (level > 0) {
                        bb.Append(DigestAlgorithms.Digest("MD5", PdfReader.GetStreamBytesRaw((PRStream)obj)));
                    }
                }
                else if (obj.IsDictionary()) {
                    SerDic((PdfDictionary)obj, level - 1, bb);
                }
                else if (obj.IsArray()) {
                    SerArray((PdfArray)obj, level - 1, bb);
                }
                else if (obj.IsString()) {
                    bb.Append("$S").Append(obj.ToString());
                }
                else if (obj.IsName()) {
                    bb.Append("$N").Append(obj.ToString());
                }
                else
                    bb.Append("$L").Append(obj.ToString());
            }