Case C-583/19 P: Judgment of the Court (Second Chamber) of 14 October 2021 — Belén Bernaldo de Quirós v European Commission (Appeal — Civil service — Disciplinary proceedings — Staff Regulations of Officials of the European Union — Article 3 of Annex IX — Commission Decision C(2004) 1588 on general implementing provisions on the conduct of administrative enquiries and disciplinary proceedings — Article 4(4) — Administrative enquiry — Hearing of the official concerned — Mandate given to the Investigation and Disciplinary Office of the Commission (IDOC) to carry out that hearing — Rights of the defence — Right to be heard)