# File lib/ancestry/class_methods.rb, line 31
    def arrange options = {}
      scope =
        if options[:order].nil?
          self.base_class.ordered_by_ancestry
        else
          self.base_class.ordered_by_ancestry_and options.delete(:order)
        end
      # Get all nodes ordered by ancestry and start sorting them into an empty hash
      arrange_nodes scope.all(options)
    end