code: func (t *transaction) addJobToTimeIndex(job *Job) {
  	t.addJobToSet(job, Keys.JobsTimeIndex, float64(job.time))
  }
docs: // addJobToTimeIndex adds commands to the transaction which will, when executed,
  // add the job id to the time index with a score equal to the job's time field.
  // If the job has been destroyed, addJobToTimeIndex will have no effect.