Exception in filters

Hello,
I have a route 'users/token' (among others) in a group route with filters. The group filters should not apply to this route but it does and i don't understand why :

Code:

$routes->group('users', ['filter' => ['tokens', 'group: superadmin']], static function ($routes) {
 
   $routes->post('token', 'UsersController::createToken');

});

Code:

public array $globals = [
        'before' => [
            'tokens' => ['except' => ['users/token']],
           
            'group' => ['except' => ['users/token']],
        ],
        'after' => [
           
        ],
    ];

The 'except' does not seem to work. why?