code: func (a *Airport) cleanUp(report bool) {
  	if report {
  		a.log.Info("cleaning up airport")
  		a.printFlightCounts()
  	}
  	if _, err := a.arrivalBroker.Delete("", datasync.WithPrefix()); err != nil {
  		a.log.Errorf("failed to clean up arrivals: %v", err)
  	}
  	if _, err := a.departureBroker.Delete("", datasync.WithPrefix()); err != nil {
  		a.log.Errorf("failed to clean up departures: %v", err)
  	}
  	if _, err := a.hangarBroker.Delete("", datasync.WithPrefix()); err != nil {
  		a.log.Errorf("failed to clean up hangar: %v", err)
  	}
  	if report {
  		a.printFlightCounts()
  	}
  }
docs: // Auxiliary methods