qimall/addons/YunfastPay/common/services/pays/PayAbstract.php

<?php

namespace addons\YunfastPay\common\services\pays;

use addons\YunfastPay\common\services\PayService;

abstract class PayAbstract implements PayInterface
{
    /**
     * @var PayService
     */
    protected $pay;

    public function __construct(PayService $payService)
    {
        $this->pay = $payService;
    }
}