# File lib/mongoid/atomic/modifiers.rb, line 47
      def set(modifications)
        modifications.each_pair do |field, value|
          next if field == "_id"
          mods = set_conflict?(field) ? conflicting_sets : sets
          add_operation(mods, field, value)
          set_fields << field.split(".", 2)[0]
        end
      end