Case C-371/21 P: Judgment of the Court (Tenth Chamber) of 14 July 2022 — SGI Studio Galli Ingegneria Srl v European Commission (Appeal — Arbitration clause — Seventh Framework Programme for research, technological development and demonstration activities (2007-2013) — Grant agreement — The MARSOL Project — Eligible costs — European Anti-Fraud Office (OLAF) investigation report finding certain expenses incurred to be ineligible — Repayment of sums paid — Right to access OLAF’s file — Right to be heard — Burden of proof — Distortion of the facts — Probative value — Principle of proportionality — Unjust enrichment)