public void TestTemplateMethod() { var excelExporter = new ExcelExporter(); excelExporter.ExportFormattedData(); // OUTPUT: Reading data from external source. // OUTPUT: Formatting data. // OUTPUT: Exporting data to Excel file. var pdfExporter = new PdfExporter(); pdfExporter.ExportFormattedData(); // OUTPUT: Reading data from external source. // OUTPUT: Formatting data. // OUTPUT: Exporting data to PDF file. }