code: def read_trailer(self):
          '''Read the HTTP trailer fields.
  
          Returns:
              bytes: The trailer data.
  
          Coroutine.
          '''
          _logger.debug('Reading chunked trailer.')
  
          trailer_data_list = []
  
          while True:
              trailer_data = yield from self._connection.readline()
  
              trailer_data_list.append(trailer_data)
  
              if not trailer_data.strip():
                  break
  
          return b''.join(trailer_data_listf read_trailer(self):
          '''Read the HTTP trailer fields.
  
          Returns:
              bytes: The trailer data.
  
          Coroutine.
          '''
          _logger.debug('Reading chunked trailer.')
  
          trailer_data_list = []
  
          while True:
              trailer_data = yield from self._connection.readline()
  
              trailer_data_list.append(trailer_data)
  
              if not trailer_data.strip():
                  break
  
          return b''.join(trailer_data_list)
docs: Read the HTTP trailer fields.
  
          Returns:
              bytes: The trailer data.
  
          Coroutine.