34It should be borne in mind, first of all, that, although Member States retain the power to organise their social security schemes, they must nonetheless, when exercising that power, observe EU law (judgments of 1 April 2008, Government of the French Community and Walloon Government, C‑212/06, EU:C:2008:178, paragraph 43; of 21 January 2016, Commission v Cyprus, C‑515/14, EU:C:2016:30, paragraph 38, and of 6 October 2016, Adrien and Others, C‑466/15, EU:C:2016:749, paragraph 22).
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