BrokenSystemTestController.php

<?php

namespace Drupal\system_test\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Lock\LockBackendInterface;

/**
 * A controller that does not specify its autowired dependencies correctly.
 */
class BrokenSystemTestController extends ControllerBase {
    
    /**
     * Constructs the BrokenSystemTestController.
     *
     * @param \Drupal\Core\Lock\LockBackendInterface $lock
     *   The lock service.
     */
    public function __construct(LockBackendInterface $lock) {
    }

}