code: func (t *Transaction) Command(name string, args redis.Args, handler ReplyHandler) {
  	t.actions = append(t.actions, &Action{
  		kind:    commandAction,
  		name:    name,
  		args:    args,
  		handler: handler,
  	})
  }
docs: // Command adds a command action to the transaction with the given args.
  // handler will be called with the reply from this specific command when
  // the transaction is executed.