Case C-187/10: Judgment of the Court (Second Chamber) of 29 September 2011 (reference for a preliminary ruling from the Raad van State — Netherlands) — Baris Unal v Staatssecretaris van Justitie (EEC-Turkey Association Agreement — Decision No 1/80 of the Association Council — Article 6(1), first indent — Turkish national — Residence permit — Family reunification — Separation of the partners — Withdrawal of the residence permit — Retroactive effect)