138In that connection, as regards the fact that the correct interpretation of EU law is so clear in the present case that it leaves no room for any reasonable doubt, it is sufficient to state that, although such a circumstance, if it is proven, may prompt the Court to rule by means of an order pursuant to Article 99 of the Rules of Procedure, that same circumstance cannot however prevent a national court from referring a question for a preliminary ruling or have the effect of rendering the question thus referred inadmissible (see, to that effect, judgment of 23 November 2021, IS (Illegality of the order for reference), C‑564/19, EU:C:2021:949, paragraph 96).
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