//convert \xXX into corresponding char
    //eg: \x0A -> '\n'
    public string filterEscapeSequence(string esacapeSequenceStr)
    {
        string filteredStr = Regex.Replace(esacapeSequenceStr, @"\\x\w{2}", new MatchEvaluator(_replaceEscapeSequenceToChar));

        return filteredStr;
    }