runAsync method
Implementation
@override
Future<void> runAsync(String label, List<String> args) async {
if (args.isEmpty) {
server.log('Wrong usage, use say <Message...>', level: LogLevel.error);
return;
}
final message = args.join(' ');
server.consoler.print("Sent $message", level: LogLevel.info);
server.process(MessageRequest(message));
}