code: func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedSnapshots() {
  	for snapshotUID, snapshot := range dswp.desiredStateOfWorld.GetSnapshots() {
  		_, exists, err := dswp.snapshotStore.Get(snapshot)
  		if err != nil {
  			glog.Errorf("get snapshot %s failed: %v", snapshotUID, err)
  			continue
  		}
  		if !exists {
  			glog.V(1).Infof("Removing snapshot %s from dsw because it does not exist in snapshot informer.", snapshotUID)
  			dswp.desiredStateOfWorld.DeleteSnapshot(cache.MakeSnapshotName(snapshot))
  		}
  	}
  }
docs: // Iterate through all pods in desired state of world, and remove if they no
  // longer exist in the informer