Case T-666/21: Judgment of the General Court of 25 January 2023 — Società Navigazione Siciliana v Commission (State aid — Maritime transport — Exemption in part from registration duties payable for the transfer of business between undertakings — Decision declaring the aid to be illegal and incompatible with the internal market and ordering its recovery — Advantage — Recipient of the aid — Service of general economic interest — Obligation to state reasons — Non-contractual liability — Excessive length of the procedure)