Case T-289/17: Judgment of the General Court of 12 July 2019 — Keolis CIF and Others v Commission (State aid — Aid scheme implemented by France between 1994 and 2008 — Investment subsidies granted by the Île-de-France region — Decision declaring the aid scheme compatible with the internal market — Concepts of ‘existing aid’ and of ‘new aid’ — Article 107 TFEU — Article 108 TFEU — Article 1(b)(i) and (v) of Regulation (EU) 2015/1589 — Limitation period — Article 17 of Regulation 2015/1589)