run method
Runs this command.
The return value is wrapped in a Future if necessary and returned by
CommandRunner.runCommand.
Implementation
@override
Future<int> run() async {
_copyPreCreatedFiles(readOptions());
await _runWorkerIsolate(argResults!.arguments);
_stripSlashFromFile();
final exitCode = await _completer?.future;
return exitCode ?? 0;
}