25As regards the first objective invoked by the Belgian Government, it must be pointed out that the provisions of European Union law do not preclude the adoption of a policy for the protection and promotion of one or more official languages of a Member State (see, to that effect, Case C-379/87 Groener [1989] ECR 3967, paragraph 19, and Case C-391/09 Runevič-Vardyn and Wardyn [2011] ECR I-3787, paragraph 85).
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