public Future<Job> log(String msg){
  Future<Job> future=Future.future();
  client.rpush(RedisHelper.getKey("job:" + this.id + ":log"),msg,_completer(future,this));
  return future.compose(null);
}

public Future < Job > log ( String msg ) { Future < Job > future = Future . future ( ) ; client . rpush ( RedisHelper . getKey ( "job:" + this . id + ":log" ) , msg , _completer ( future , this ) ) ; return future . compose ( null ) ; }
log with some messages .
