private void LoadFile(object state)
        {
            Console.WriteLine($"{DateTime.Now} LoadFile(..) method has been invoked.");
            var fileName = "current.xlsx";

            var stream = CloudHelper.ReadBlobAsync(storageConnectionString, blobContainerName, fileName).Result;

            stream.Seek(0, SeekOrigin.Begin);

            using (var excelPackage = new ExcelPackage(stream))
            {
                var excelWorkSheets = excelPackage.Workbook.Worksheets;

                foreach (var worksheet in excelWorkSheets)
                {
                    Console.WriteLine($"\t - Processing worksheet: {worksheet.Name}");
                    ProcessWorksheet(worksheet);
                }
            }
        }