Case C-403/18 P: Judgment of the Court (Eighth Chamber) of 17 October 2019 — Alcogroup SA, Alcodis SA v European Commission, Orde van Vlaamse Balies, Ordre des barreaux francophones et germanophone, Ordre français des avocats du barreau de Bruxelles (Appeal — Competition — Agreements, decisions and concerted practices — Ethanol market — Regulation (EC) No 1/2003 — Article 20(4) — Inspection decision — Conduct of the inspection — Legal professional privilege — Refusal to suspend measures of investigation — Action for annulment — Admissibility — Preparatory decision)