SATE-EasyReceipt/app/Mail/Members/Subscription/Cancel.php

<?php

namespace App\Mail\Members\Subscription;

use App\Exceptions\AppCommonException;
use App\Mail\Members\Member;

class Cancel extends Member
{

    private string $parkName;

    /**
     * Create a new message instance.
     *
     * @return void
     */
    public function __construct()
    {
        $context = $this->context();
        $parking = $context->getParking();
        if ($parking === null) {
            throw new AppCommonException("コンテキスト不正 駐車場情報");
        }

        $this->parkName = $parking->park_name;
    }

    public function getTemplateName(): string
    {
        return 'mails.members.subscription.cancel';
    }

    public function getSubject(): string
    {
        return '【スマートパーキングパス】申込キャンセルのお知らせ';
    }

    public function getMemberParams(): array
    {
        return [
            'parkName' => $this->parkName,
        ];
    }
}