Case C-300/19: Judgment of the Court (First Chamber) of 11 November 2020 (request for a preliminary ruling from the Juzgado de lo Social No 3 de Barcelona — Spain) — UQ v Marclean Technologies SLU (Reference for a preliminary ruling — Social policy — Collective redundancies — Directive 98/59/EC — First subparagraph of Article 1(1)(a) — Definition of ‘collective redundancies’ — Methods of calculating the number of redundancies — Reference period take into account)