static void Main(string[] args)
        {
            IExcelConverter converter = new ExcelConverter();
            IFileStorage    fileStore = new FolderFileStorage();

            // Input Excel file
            var inputFilePath = @"C:\_git\ExcelDataExporter\tst\Resources\Financial Sample.xlsx";

            var inputStream = fileStore.GetFileStream(inputFilePath);

            // Load Stream
            converter.LoadStream(inputStream);

            // Convert Excel To XML
            //var xmlString = converter.GetXML(");
            var xmlString = converter.GetXML("Excel", "RowItem", "http://sample.com");

            // Save Instance
            fileStore.SaveFile("Excel.xml", StreamHelpers.ConvertStringToStream(xmlString));

            // Convert Excel To JSON
            var jsonString = converter.GetJSON();

            // Save Instance
            fileStore.SaveFile("Excel_JSON.json", StreamHelpers.ConvertStringToStream(jsonString));

            Console.ReadKey();
        }