Question juridique clé
Whether the appeal in international mutual assistance met the admissibility requirement of a particularly important case under Art. 84 LTF.
Solution extraite
No particularly important case was shown; the appeal could not be heard on the merits.
Motifs extraits
The alleged defects in the request, hearing rights, proportionality, potential utility, and third-party protection did not depart from settled case law and did not raise a question of principle.