Questione giuridica chiave
Whether the public law appeal could be treated as an administrative law appeal against the refusal to renew the residence permit.
Decisione estratta
No; the appellant had no federal or international right to renewal, so an administrative law appeal was inadmissible.
Motivazione estratta
In foreign police matters, such an appeal is unavailable when the applicant cannot derive a subjective right to the permit from federal or international law.