instance method invert_rename_enum_value

# File activerecord/lib/active_record/migration/command_recorder.rb, line 391
        def invert_rename_enum_value(args)
          type_name, options = args

          unless options.is_a?(Hash) && options.has_key?(:from) && options.has_key?(:to)
            raise ActiveRecord::IrreversibleMigration, "rename_enum_value is only reversible if given a :from and :to option."
          end

          options[:to], options[:from] = options[:from], options[:to]
          [:rename_enum_value, [type_name, options]]
        end