Case T-83/18: Judgment of the General Court of 13 December 2018 — CH v Parliament (Civil service — Accredited parliamentary assistants — Article 24 of the Staff Regulations — Request for assistance — Article 12a of the Staff Regulations — Psychological harassment — Advisory Committee dealing with harassment complaints between Accredited Parliamentary Assistants and Members of the European Parliament and its prevention at the workplace — Decision rejecting the request for assistance — Right to be heard — Principle of audi alteram partem — Refusal to disclose the opinion of the Advisory Committee and the minutes of the hearing of witnesses — Refusal of the defendant institution to comply with a measure of inquiry of the General Court)