Question juridique clé
Whether the cantonal authority violated the inquisitorial principle by not ordering additional file production and hearings.
Solution extraite
No. The appellant did not show that the requested files were indispensable or identify specific omitted evidence; the relevant fiduciary documents were considered.
Motifs extraits
Supervisory authorities must investigate ex officio, but parties must cooperate. Anticipated refusal of evidence is permissible, and the complaint lacked precise substantiation.