app/models/nomenclatural_rank/iczn/higher_classification_group/class_rank.rb
class NomenclaturalRank::Iczn::HigherClassificationGroup::ClassRank < NomenclaturalRank::Iczn::HigherClassificationGroup
def self.parent_rank
NomenclaturalRank::Iczn::HigherClassificationGroup::Superclass
end
def rank_name
'class'
end
end