49/2018 : 17 April 2018 – Judgment of the Court of Justice in Joined Cases C-195/17C-197/17 à C-203/17, C-226/17, C-228/17, C-254/17,C-274/17, C-275/17, C-278/17 à C-286/17, C-290/17 à C-292/17