code: func (dsw *desiredStateOfWorld) DeleteSnapshot(snapshotName string) error {
  	dsw.Lock()
  	defer dsw.Unlock()
  
  	glog.Infof("Deleting snapshot from desired state of world: %s", snapshotName)
  
  	delete(dsw.snapshots, snapshotName)
  	return nil
  }
docs: // Removes the snapshot from the list of existing snapshots