Council Decision (EU) 2020/680 of 18 May 2020 on the position to be taken on behalf of the European Union in the Committee on Services and Investment established under the Comprehensive Economic and Trade Agreement (CETA) between Canada, of the one part, and the European Union and its Member States, of the other part, as regards the adoption of a code of conduct for Members of the Tribunal, Members of the Appellate Tribunal and mediators