code: func groupJobsByParent(js []batchv1.Job) map[types.UID][]batchv1.Job {
  	jobsBySj := make(map[types.UID][]batchv1.Job)
  	for _, job := range js {
  		parentUID, found := getParentUIDFromJob(job)
  		if !found {
  			klog.V(4).Infof("Unable to get parent uid from job %s in namespace %s", job.Name, job.Namespace)
  			continue
  		}
  		jobsBySj[parentUID] = append(jobsBySj[parentUID], job)
  	}
  	return jobsBySj
  }
docs: // groupJobsByParent groups jobs into a map keyed by the job parent UID (e.g. scheduledJob).
  // It has no receiver, to facilitate testing.