code: func (nm *NamespaceController) Run(workers int, stopCh <-chan struct{}) {
  	defer utilruntime.HandleCrash()
  	defer nm.queue.ShutDown()
  
  	klog.Infof("Starting namespace controller")
  	defer klog.Infof("Shutting down namespace controller")
  
  	if !controller.WaitForCacheSync("namespace", stopCh, nm.listerSynced) {
  		return
  	}
  
  	klog.V(5).Info("Starting workers of namespace controller")
  	for i := 0; i < workers; i++ {
  		go wait.Until(nm.worker, time.Second, stopCh)
  	}
  	<-stopCh
  }
docs: // Run starts observing the system with the specified number of workers.