code: func (t *transaction) debugSet(setName string) {
  	t.command("ZRANGE", redis.Args{setName, 0, -1, "WITHSCORES"}, func(reply interface{}) error {
  		vals, err := redis.Strings(reply, nil)
  		if err != nil {
  			return err
  		}
  		fmt.Printf("%s: %v\n", setName, vals)
  		return nil
  	})
  }
docs: // debugSet simply prints out the value of the given set