58Thus, as the referring court points out, the Court has held that a national legislature may breach the principles of legal certainty and of the protection of legitimate expectations when it suddenly and unexpectedly adopts a new law which withdraws a right that taxable persons enjoyed until then, without allowing them the time necessary to adjust, when the objective to be attained did not so require (see, to this effect, judgment of 29 April 2004 in Gemeente Leusden and Holin Groep, C‑487/01 and C‑7/02, EU:C:2004:263, paragraph 70).
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