Questione giuridica chiave
Whether the respondents 1a-c had standing as heirs of B.
Decisione estratta
The challenge failed because any objection to the composition of the heirs had to be raised timely in the cantonal proceedings; the factual record did not show such a proper objection.
Motivazione estratta
Since the appellant did not properly contest the heir community below, the appellate court had no duty to investigate further; new arguments were inadmissible.