code: def ConsumeString(self):
      
      the_bytes = self.ConsumeByteString()
      try:
        return six.text_type(the_bytes, 'utf-8')
      except UnicodeDecodeError as e:
        raise self._StringParseError(e)
docs: Consumes a string value.
  
      Returns:
        The string parsed.
  
      Raises:
        ParseError: If a string value couldn't be consumed.