StateDone.php

<?php
/**
 * Created by PhpStorm.
 * User: zcer
 * Date: 2020/2/23
 * Time: 下午5:45
 */

class StateDone implements StateIF
{
    public function proceedToNext(OrderContext $context)
    {
        // there is nothing more to do
    }

    public function toString(): string
    {
        return 'done';
    }
}