code: async def parse_line(self):
          
          line = await self.stream.readline()
          if not line:
              self.stream.close()
              raise ConnectionResetError
          s = line.decode(encoding=self.encoding).rstrip()
          logger.info(s)
          return Code(s[:3]), s[3:]
docs: :py:func:`asyncio.coroutine`
  
          Parsing server response line.
  
          :return: (code, line)
          :rtype: (:py:class:`aioftp.Code`, :py:class:`str`)
  
          :raises ConnectionResetError: if received data is empty (this
              means, that connection is closed)
          :raises asyncio.TimeoutError: if there where no data for `timeout`
              period