Case C-118/17: Judgment of the Court (Third Chamber) of 14 March 2019 (request for a preliminary ruling from the Budai Központi Kerületi Bíróság — Hungary) — Zsuzsanna Dunai v ERSTE Bank Hungary Zrt (Reference for a preliminary ruling — Consumer protection — Unfair terms in consumer contracts — Directive 93/13/EEC — Article 1(2) — Article 6(1) — Loan contract denominated in a foreign currency — Exchange difference — Substitution of a legislative provision for an unfair term declared void — Exchange rate risk — Continued existence of the contract after the unfair term has been deleted — National system for a uniform interpretation of law)