Case C-131/19 P: Judgment of the Court (Eighth Chamber) of 25 June 2020 — European Commission v CX (Appeal — Civil Service — Disciplinary proceedings — Rights of the defence — Right to be heard — Annex IX to the Staff Regulations of Officials of the European Union — Article 4 — Opportunity for the official who cannot be heard to comment in writing or to be represented — Article 22 — Hearing of the official by the Appointing Authority prior to the adoption of the disciplinary penalty — Alleged inability of the official to be heard and to make written submissions or to be represented — Assessment of medical evidence — Failure of the General Court of the European Union to reply to arguments raised at first instance)