instance method _marshal_dump_7_1

# File activerecord/lib/active_record/marshalling.rb, line 24
      def _marshal_dump_7_1
        payload = [attributes_for_database, new_record?]

        cached_associations = self.class.reflect_on_all_associations.select do |reflection|
          if association_cached?(reflection.name)
            association = association(reflection.name)
            association.loaded? || association.target.present?
          end
        end

        unless cached_associations.empty?
          payload << cached_associations.map do |reflection|
            [reflection.name, association(reflection.name).target]
          end
        end

        payload
      end