Case C-385/17: Judgment of the Court (Fourth Chamber) of 13 December 2018 (request for a preliminary ruling from the Arbeitsgericht Verden — Germany) — Torsten Hein v Albert Holzkamm GmbH & Co. (Reference for a preliminary ruling — Social policy — Organisation of working time — Directive 2003/88/EC — Right to paid annual leave — Article 7(1) — Legislation of a Member State under which collective agreements may provide for account to be taken of periods of short-time working when calculating remuneration to be paid in respect of annual leave — Temporal effects of judgments ruling on interpretation)