Case C-519/18: Judgment of the Court (Fifth Chamber) of 12 December 2019 (request for a preliminary ruling from the Fővárosi Közigazgatási és Munkaügyi Bíróság — Hungary) — TB v Bevándorlási és Menekültügyi Hivatal (Reference for a preliminary ruling — Immigration policy — Right to family reunification — Directive 2003/86/EC — Article 10(2) — Optional provision — Prerequisites for exercising the right to family reunification — Member of a refugee’s family not referred to in Article 4 — Concept of a ‘dependant’)