run method
Runs this command.
The return value is wrapped in a Future
if necessary and returned by
CommandRunner.runCommand
.
Implementation
@override
Future<void> run() async {
final args = ensureArgResults();
final fileArg = args['file'];
final licenseArg = args['license'];
final specificFile = fileArg is String
? fileArg
: licenseArg is String
? licenseArg
: null;
await updateYearOnFile(specificFile);
}