iTextSharp.text.pdf.PdfObject.ToString C# (CSharp) Метод

        public override string ToString() {
            if (bytes == null)
                return "";
            else
                return PdfEncodings.ConvertToString(bytes, null);
        }
    

            private void SerObject(PdfObject obj, int level, ByteBuffer bb, HashSet2 <PdfObject> serialized)
            {
                if (level <= 0)
                {
                    return;
                }
                if (obj == null)
                {
                    bb.Append("$Lnull");
                    return;
                }

                if (obj.IsIndirect())
                {
                    if (serialized.Contains(obj))
                    {
                        return;
                    }
                    else
                    {
                        serialized.Add(obj);
                    }
                }
                obj = PdfReader.GetPdfObject(obj);
                if (obj.IsStream())
                {
                    bb.Append("$B");
                    SerDic((PdfDictionary)obj, level - 1, bb, serialized);
                    if (level > 0)
                    {
                        bb.Append(DigestAlgorithms.Digest("MD5", PdfReader.GetStreamBytesRaw((PRStream)obj)));
                    }
                }
                else if (obj.IsDictionary())
                {
                    SerDic((PdfDictionary)obj, level - 1, bb, serialized);
                }
                else if (obj.IsArray())
                {
                    SerArray((PdfArray)obj, level - 1, bb, serialized);
                }
                else if (obj.IsString())
                {
                    bb.Append("$S").Append(obj.ToString());
                }
                else if (obj.IsName())
                {
                    bb.Append("$N").Append(obj.ToString());
                }
                else
                {
                    bb.Append("$L").Append(obj.ToString());
                }
            }