Case C-192/21: Judgment of the Court (Seventh Chamber) of 30 June 2022 (request for a preliminary ruling from the Tribunal Superior de Justicia de Castilla y León — Spain) — Clemente v Comunidad de Castilla y León (Dirección General de la Función Pública) (Reference for a preliminary ruling — Social policy — Directive 1999/70/EC — Framework agreement on fixed-term work concluded by ETUC, UNICE and CEEP — Clause 4(1) — Principle of non-discrimination — Failure to take into account the services provided by an interim civil servant who has become a career civil servant for the purpose of consolidating his or her personal grade — Assimilation of those services to those provided by a career civil servant — Concept of ‘objective grounds’ — Taking into account the period of service for the purpose of acquiring the status of career civil servant — Structure of the vertical progression of career civil servants under national legislation)