code: func (p *Plan) Stats() PlanStats {
  	var ret PlanStats
  	for _, r := range p.Resources {
  		switch r.Action {
  		case plans.Create:
  			ret.ToAdd++
  		case plans.Update:
  			ret.ToChange++
  		case plans.DeleteThenCreate, plans.CreateThenDelete:
  			ret.ToAdd++
  			ret.ToDestroy++
  		case plans.Delete:
  			ret.ToDestroy++
  		}
  	}
  	return ret
  }
docs: // Stats returns statistics about the plan