47Lastly, if examination of an EU measure reveals that it pursues several purposes or that it comprises several components and if one of those purposes or components is identifiable as the main or predominant purpose or component, whereas the others are merely incidental or are only extremely limited in scope, the legal basis for adopting that measure must be determined in accordance with that main purpose or component (see, to that effect, judgment of 20 November 2018, Commission v Council (Antarctic MPAs), C‑626/15 and C‑659/16, EU:C:2018:925, paragraph 77, and Opinion 1/19 (Istanbul Convention) of 6 October 2021, EU:C:2021:832, paragraph 286).
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