Case C-393/17: Judgment of the Court (Third Chamber) of 4 July 2019 (request for a preliminary ruling from the hof van beroep te Antwerpen — Belgium) — Criminal proceedings against Freddy Lucien Magdalena Kirschstein, Thierry Frans Adeline Kirschstein (Reference for a preliminary ruling — Directive 2005/29/EC — Unfair commercial practices — Scope — Concept of ‘commercial practices’ — Directive 2006/123/EC — Services in the internal market — Criminal law — Authorisation schemes — Higher education — ‘Master’s’ degree — Prohibition to confer certain degrees without authorisation)