Case C-282/19: Judgment of the Court (Second Chamber) of 13 January 2022 (request for a preliminary ruling from the Tribunale di Napoli — Italy) — YT and Others v Ministero dell’Istruzione, dell’Università e della Ricerca — MIUR, Ufficio Scolastico Regionale per la Campania (Reference for a preliminary ruling — Social policy — Directive 1999/70/EC — Framework agreement on fixed-term work concluded by ETUC, UNICE and CEEP — Clauses 4 and 5 — Fixed-term employment contracts in the public sector — Catholic religious education teachers — Concept of ‘objective reasons’ justifying the renewal of such contracts — Permanent need for replacement staff)