Case T-180/20: Order of the General Court of 6 October 2020 — Sharpston v Council and Conference of the Representatives of the Governments of the Member States (Action for annulment — Withdrawal of the United Kingdom from the European Union — Declaration by the Conference of the Representatives of the Governments of the Member States on the consequences of the withdrawal of the United Kingdom from the European Union for the Advocates General of the Court of Justice — Act not open to challenge — Inadmissibility)