    # File lib/active_record/base.rb, line 1666
          def attributes=(new_attributes)
            return if new_attributes.nil?
            attributes = new_attributes.dup
            attributes.stringify_keys!

            multi_parameter_attributes = []
            remove_attributes_protected_from_mass_assignment(attributes).each do |k, v|
              k.include?("(") ? multi_parameter_attributes << [ k, v ] : send(k + "=", v)
            end

            assign_multiparameter_attributes(multi_parameter_attributes)
          end