code: func (t *transaction) scanJobById(id string, job *Job) {
  	job.id = id
  	t.command("HGETALL", redis.Args{job.Key()}, newScanJobHandler(job))
  }
docs: // scanJobById adds commands and a reply handler to the transaction which, when run,
  // will scan the values of the job corresponding to id into job. It does not execute
  // the transaction.