Case T-318/17: Judgment of the General Court of 27 October 2021 — Clean Sky 2 Joint Undertaking v Revoind Industriale di Pindaru Gelu (Arbitration clause — Grant agreement concluded in the framework of the Seventh Framework Programme for research and technological development including demonstration activities (2007-2013) — Non-performance of the contract — Repayment of the amounts advanced — Default interest — Procedure by default)