instance method _create_record

# File activerecord/lib/active_record/encryption/encryptable_record.rb, line 178
        def _create_record(attribute_names = self.attribute_names)
          if has_encrypted_attributes?
            # Always persist encrypted attributes, because an attribute might be
            # encrypting a column default value.
            attribute_names |= self.class.encrypted_attributes.map(&:to_s)
          end
          super
        end