35Furthermore, it is established that Member States may adopt implementing measures for a regulation provided that they do not thereby obstruct its direct applicability or conceal its nature as an act of EU law; that they specify that they are acting in exercise of a discretion conferred on them under that regulation; and that they adhere to the parameters laid down thereunder (judgments of 25 October 2012 in Ketelä, C‑592/11, EU:C:2012:673, paragraph 36, and 15 May 2014 in Szatmári Malom, C‑135/13, EU:C:2014:327, paragraph 55).
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