Case C-453/07: Judgment of the Court (Third Chamber) of 25 September 2008 (reference for a preliminary ruling from the Verwaltungsgericht Gießen — Germany) — Hakan Er v Wetteraukreis (EEC-Turkey Association Agreement — Decision No 1/80 of the Association Council — Article 7, first paragraph, second indent — Right of residence of the adult child of a Turkish worker — Absence of paid employment — Conditions governing the loss of acquired rights)