C-33/18: Judgment of the Court (Sixth Chamber) of 6 June 2019 (request for a preliminary ruling from the Cour du travail de Liège — Belgium) — V v Institut national d'assurances sociales pour travailleurs indépendants (Inasti), Securex Integrity ASBL (Reference for a preliminary ruling — Coordination of social security systems — Migrant workers — Regulation (EC) No 883/2004 — Transitional provisions — Article 87(8) — Regulation (EEC) No 1408/71 — Article 14c(b) — Worker exercising an activity as an employed and an activity as a self-employed person in different Member States — Derogations from the principle of a single applicable national legislation — Double affiliation — Application to be subject to the legislation applicable under Regulation No 883/2004)