Questione giuridica chiave
Whether the appeal is admissible as a public-law matter under Art. 50 AuG.
Decisione estratta
The filing is treated as an appeal in public law because the appellant invokes continuing permit rights under Art. 50 AuG.
Motivazione estratta
Whether the conditions of Art. 50 AuG are met belongs to the merits, not admissibility.