Case T-128/17: Judgment of the General Court of 14 December 2018 — Torné v Commission (Civil service — Officials — 2014 reform of the Staff Regulations — Leave on personal grounds — Engagement at the same time as a member of the temporary staff — Transitional measures relating to certain details in the calculation of pension rights — Request for an advance ruling — Act having an adverse effect — Purpose of the transitional measures — Application ratione personae — Entry into service)