PianoTime/app/Http/Controllers/TestController.php

<?php

namespace App\Http\Controllers;

use App\Models\CheckCard;
use App\Models\Student;
use App\Models\StudentCourse;
use App\Services\Admin\AdminUser;
use Carbon\Carbon;
use GuzzleHttp\Client;
use Illuminate\Http\Request;
use Intervention\Image\Facades\Image;

class TestController extends Controller
{
    public function index(Request $request)
    {
        $check_card = CheckCard::find(10);
        dd($check_card->getDuration());
    }
}