Case C-405/20: Judgment of the Court (First Chamber) of 5 May 2022 (request for a preliminary ruling from the Verwaltungsgerichtshof — Austria) — EB, JS, DP v Versicherungsanstalt öffentlich Bediensteter, Eisenbahnen und Bergbau (BVAEB) (Reference for a preliminary ruling — Social policy — Article 157 TFEU — Protocol (No 33) — Equal treatment of men and women in matters of employment and occupation — Directive 2006/54/EC — Article 5(c) and Article 12 — Prohibition of indirect discrimination on grounds of sex — Occupational social security scheme applicable after the date referred to in that protocol and that article 12 — Retirement pensions of civil servants — National legislation providing for an annual adjustment of retirement pensions — Adjustment on a reducing scale depending on the amount of the retirement pension, with no adjustment at all above a certain amount — Justifications)