48In that regard, it is established case-law, first, that where Member States adopt measures by which they implement EU law, they are required to observe the general principles of that law, which include, inter alia, the principle of the protection of legitimate expectations (see, to that effect, judgments of 14 September 2006, Elmeka, C‑181/04 to C‑183/04, EU:C:2006:563, paragraph 31, and of 26 May 2016, Județul Neamț and Județul Bacău, C‑260/14 and C‑261/14, EU:C:2016:360, paragraph 54).
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