code: func (e *engineImpl) ResetAllJobsOnDevServer(c context.Context) error {
  	if !info.IsDevAppServer(c) {
  		return errors.New("ResetAllJobsOnDevServer must not be used in production")
  	}
  	q := ds.NewQuery("Job").Eq("Enabled", true)
  	keys := []*ds.Key{}
  	if err := ds.GetAll(c, q, &keys); err != nil {
  		return transient.Tag.Apply(err)
  	}
  	wg := sync.WaitGroup{}
  	errs := errors.NewLazyMultiError(len(keys))
  	for i, key := range keys {
  		wg.Add(1)
  		go func(i int, key *ds.Key) {
  			errs.Assign(i, e.resetJobOnDevServer(c, key.StringID()))
  			wg.Done()
  		}(i, key)
  	}
  	wg.Wait()
  	return transient.Tag.Apply(errs.Get())
  }
docs: // ResetAllJobsOnDevServer forcefully resets state of all enabled jobs.
  //
  // Part of the internal interface, doesn't check ACLs.