# File lib/symetrie_com/acts_as_better_nested_set.rb, line 625
        def direct_child_of?(parent, scope = {})
          if !scope.empty? && parent.respond_to?(:direct_child_by_id)
            parent.direct_child_by_id(self.id, scope).is_a?(self.class)
          else
            parent.respond_to?(parent_col_name) && self[parent_col_name] == parent.id
          end
        end