Aerys\Router::__invoke PHP Method

    public function __invoke(Request $request, Response $response)
    {
        if (!($preRoute = $request->getLocalVar("aerys.routed"))) {
            return;
        }
        list($isMethodAllowed, $data) = $preRoute;
        if ($isMethodAllowed) {
            return $data($request, $response, $request->getLocalVar("aerys.routeArgs"));
        } else {
            $allowedMethods = implode(",", $data);
            $response->setStatus(HTTP_STATUS["METHOD_NOT_ALLOWED"]);
            $response->setHeader("Allow", $allowedMethods);
            $response->setHeader("Aerys-Generic-Response", "enable");
            $response->end();
        }
    }