Index.php

<?php
/**
 * @author Artemii Karkusha
 * @copyright Copyright (c) (https://www.linkedin.com/in/artemiy-karkusha/)
 */

declare(strict_types=1);

namespace ArtemiiKarkusha\AdobeCommercePreparingToCertification\Controller\Adminhtml\View;

use Magento\Backend\App\Action\Context;
use Magento\Backend\Model\View\Result\Page;
use Magento\Backend\App\Action;
use Magento\Framework\App\Action\HttpGetActionInterface;
use Magento\Framework\App\ResponseInterface;
use Magento\Framework\Controller\ResultInterface;
use Magento\Framework\View\Result\PageFactory;

class Index extends Action implements HttpGetActionInterface
{
    /** 1.1
     * Authorization level of a basic admin session
     *
     * @see _isAllowed()
     */
    public const ADMIN_RESOURCE = 'ArtemiiKarkusha_AdobeCommercePreparingToCertification::view';

    /**
     * @param Context $context
     * @param PageFactory $resultPageFactory
     */
    public function __construct(
        Context $context,
        private PageFactory $resultPageFactory
    ) {
        parent::__construct($context);
    }

    /**
     * @inheridoc
     */
    public function execute(): ResultInterface
    {
        /** @var Page $resultPage */
        $resultPage = $this->resultPageFactory->create();
        $resultPage->setActiveMenu('ArtemiiKarkusha_AdobeCommercePreparingToCertification::menu');
        return $resultPage;
    }
}