Case C-812/18 P: Judgment of the Court (Tenth Chamber) of 4 June 2020 — Terna SpA v European Commission (Appeal — Energy — Projects of common interest to the EU — EU financial assistance granted to two projects in the field of trans-European energy networks — Directive 2004/17/EC — Article 37 — Subcontracting — Article 40(3)(c) — Direct award — Technical specificity — Framework agreement — Reduction of the assistance originally granted following a financial audit — Reimbursement of amounts originally paid)