Case T-47/18: Judgment of the General Court of 20 September 2019 — UZ v Parliament (Civil service — Officials — Disciplinary proceedings — Psychological harassment — Disciplinary sanction — Downgrading by one grade and resetting of promotion points to zero — Rejection of the applicant’s request for assistance — Manner in which the administrative investigation was carried out — Requirement of impartiality — Right to be heard — Procedural irregularity — Consequences of the procedural irregularity)