Case T-165/16: Judgment of the General Court of 13 December 2018 — Ryanair and Airport Marketing Services v Commission (State aid — Agreements concluded with the airline Ryanair and its subsidiary Airport Marketing Services — Airport services — Marketing services — Decision declaring the aid to be incompatible with the internal market and ordering its recovery — Notion of State aid — Advantage — Private investor test — Recovery — Article 41 of the Charter of Fundamental Rights of the European Union — Access to the file — Right to be heard)