private static void Print(CanonPrinter canonPrinter)
 {
     PrinterManager.Print(canonPrinter);
     PrinterManager.Log("Printed on Canon");
 }
 private static void CreatePrinter()
 {
     PrinterManager.Add(new Printer());
 }
 private static void Print(EpsonPrinter epsonPrinter)
 {
     PrinterManager.Print(epsonPrinter);
     PrinterManager.Log("Printed on Epson");
 }