Question juridique clé
Whether the public-law appeal was admissible regarding refusal to renew the residence permit under Art. 50 AuG
Solution extraite
The appeal was admissible for the permit issue because the appellant invoked a potential statutory right under Art. 50 AuG.
Motifs extraits
Whether an entitlement under Art. 50 AuG exists is a merits question, not an admissibility question.