code: def to_text_format(self):
          '''Format as detached DNS information as text.'''
          return '\n'.join(itertools.chain(
              (self.fetch_date.strftime('%Y%m%d%H%M%S'), ),
              (rr.to_text() for rr in self.resource_records),
              (),
          )f to_text_format(self):
          '''Format as detached DNS information as text.'''
          return '\n'.join(itertools.chain(
              (self.fetch_date.strftime('%Y%m%d%H%M%S'), ),
              (rr.to_text() for rr in self.resource_records),
              (),
          ))
docs: Format as detached DNS information as text.