code: public function optionsMap(): array
      {
          $routes_list = $this->router->getRoutes();
          $final_routes = $modified_routes = [];
  
          foreach ($routes_list as $route) {
              if (isset($modified_routes[$route[1]]) === false) {
                  $modified_routes[$route[1]] = [];
              }
              $modified_routes[$route[1]][] = $route[0];
          }
  
          foreach ($modified_routes as $route => $method) {
              $final_routes[] = ['OPTIONS', $route, function () use ($method) {
                  return [
                      "headers" => [
                          [
                              'X-PHP-Response-Code: 200',
                              true,
                              200
                          ],
                          [
                              'Allow: ' . implode(',', $method)
                          ]
                      ],
                      "response" => ''
                  ];
              }];
          }
  
          return $final_routes;
      }
docs: Returns the request map for OPTIONS requests
  
  @return array