Particular reason for using fmt on variable assigment?

 Particular reason for using fmt on variable assigment?

``` go
40           if newVar.Default != reflect.ValueOf(nil) {
41              fmt.Println("setting default:", newVar.Default.String())
42              newVar.SetValue(newVar.Default)
43          } else {
44              fmt.Println("No default; setting zero value")
45              newVar.SetValue(reflect.Zero(newVar.Type))
46          }
```
