code: func (r ReferenceStorage) CountLooseRefs() (int, error) {
  	tc, err := r.temporal.CountLooseRefs()
  	if err != nil {
  		return -1, err
  	}
  
  	bc, err := r.ReferenceStorer.CountLooseRefs()
  	if err != nil {
  		return -1, err
  	}
  
  	return tc + bc, nil
  }
docs: // CountLooseRefs honors the storer.ReferenceStorer interface.