TYPO3 Core

I registered an own middleware with.

    return [
        'frontend' => [
            'me/ext/fileload-for-user' => [
                'target' => \Me\Ext\Middleware\FileloadForFeUser::class,
                'before' => [
                    'typo3/cms-frontend/static-route-resolver'
                ],
                'after' => [
                    'typo3/cms-frontend/authentication'
                ]
            ],
        ],
    ];  

I could get the Id of my login-user but not its usergroups. I needed the workaround. I could not get the aspects.

        $context = GeneralUtility::makeInstance(Context::class);
        // Checking if a user is logged in
        $userUid = $context->getPropertyFromAspect('frontend.user', 'id');
        $userGroupsRaw =$genericRepository->findFieldLikeUsergroupInFeUsersByUid($userUid); // Simple request with QueryBuilder on fe_users
        if (is_string($userGroupsRaw)) {
            $userGroups = (($userUid !== false) ?
                array_merge(
                    [0,-2],
                    array_map(
                        'intval',
                        explode(',', $userGroupsRaw)
                    )
                ) :
                (false)
            );
        } else {
            $userGroups = false;
        }
//        $userGroupsRaw = $context->getPropertyFromAspect('frontend.user', 'groupIds');  // this wont work i only got [0,-2]