26In that regard, it is apparent from Article 1(a) of Directive 2004/38 that that directive is intended to set out the conditions governing the exercise of that right, which include, where residence is desired for a period of longer than three months, in particular the condition laid down in Article 7(1)(a) of that directive that Union citizens must be workers or self-employed persons in the host Member State (see, to that effect, Brey, C‑140/12, EU:C:2013:565, paragraph 53 and the case-law cited).
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