code: func (dsc *DaemonSetsController) addSuspendedDaemonPods(node, ds string) {
  	dsc.suspendedDaemonPodsMutex.Lock()
  	defer dsc.suspendedDaemonPodsMutex.Unlock()
  
  	if _, found := dsc.suspendedDaemonPods[node]; !found {
  		dsc.suspendedDaemonPods[node] = sets.NewString()
  	}
  	dsc.suspendedDaemonPods[node].Insert(ds)
  }
docs: // addSuspendedDaemonPods adds DaemonSet which has pods that 'want to run,
  // but should not schedule' for the node to the suspended queue.