instance method _create_record

# File activerecord/lib/active_record/persistence.rb, line 920
      def _create_record(attribute_names = self.attribute_names)
        attribute_names = attributes_for_create(attribute_names)

        self.class.with_connection do |connection|
          returning_columns = self.class._returning_columns_for_insert(connection)

          returning_values = self.class._insert_record(
            connection,
            attributes_with_values(attribute_names),
            returning_columns
          )

          returning_columns.zip(returning_values).each do |column, value|
            _write_attribute(column, type_for_attribute(column).deserialize(value)) if !_read_attribute(column)
          end if returning_values
        end

        @new_record = false
        @previously_new_record = true

        yield(self) if block_given?

        id
      end