Case C-8/18: Order of the Court (Ninth Chamber) of 16 May 2019 (request for a preliminary ruling from the Vilniaus apygardos teismas — Lithuania) — TE, UD, YB, ZC v Luminor Bank AB (Reference for a preliminary ruling — Article 53(2) and Article 99 of the Rules of Procedure of the Court of Justice — Freedom to provide services — Markets in financial instruments — Natural person who has acquired a derivative financial instrument from a bank — Classification of that person within the meaning of EU law)