run method
Parses args
and invokes Command.run
on the chosen command.
This always returns a Future in case the command is asynchronous. The
Future will throw a UsageException
if args
was invalid.
Implementation
@override
Future<int> run(Iterable<String> args) async {
try {
return await super.run(args) ?? 0;
} on UsageException catch (e) {
stderr.writeln(e);
return 1;
}
}