Case T-111/15: Judgment of the General Court of 13 December 2018 — Ryanair and Airport Marketing Services v Commission (State aid — Agreements between the Syndicat mixte des aéroports de Charente and Ryanair and its subsidiary Airport Marketing Services — Airport services — Marketing services — Decision declaring the aid incompatible with the internal market and ordering its recovery — Notion of State aid — Imputability to the State — Chamber of Commerce and Industry — Advantage — Private investor test — Recovery — Article 41 of the Charter of Fundamental Rights — Right of access to the file — Right to be heard)