Questione giuridica chiave
Whether the appeal could challenge the first-instance tax and cost decisions in addition to the cantonal appellate judgment
Decisione estratta
The challenge against the earlier tax and cost decisions was inadmissible because they were replaced by the cantonal administrative court judgment under the devolutive effect of appeal.
Motivazione estratta
Only the final cantonal judgment was open to federal review; prior administrative decisions no longer had independent existence.