# File lib/symetrie_com/acts_as_better_nested_set.rb, line 1080
        def calculate_reorder_steps(ordered_ids, current)
          steps = []
          current.each_with_index do |source, idx|
            new_idx = ordered_ids.index(source.id)
            steps << [source, new_idx] if idx != new_idx
          end
          steps
        end