code: func (embd *Embedded) CleanDs() {
  	if embd.client != nil {
  		resp, err := embd.client.Delete(context.Background(), "", clientv3.WithPrefix())
  		if err != nil {
  			panic(err)
  		}
  		fmt.Printf("resp: %+v\n", resp)
  	}
  }
docs: // CleanDs deletes all stored key-value pairs.