code: def _process_file_continue_request(self, request: BaseRequest):
          '''Modify the request to resume downloading file.'''
          if os.path.exists(self._filename):
              size = os.path.getsize(self._filename)
              request.set_continue(size)
              self._file_continue_requested = True
  
              _logger.debug('Continue file from {0}.', size)
          else:
              _logger.debug('No file to continue.'f _process_file_continue_request(self, request: BaseRequest):
          '''Modify the request to resume downloading file.'''
          if os.path.exists(self._filename):
              size = os.path.getsize(self._filename)
              request.set_continue(size)
              self._file_continue_requested = True
  
              _logger.debug('Continue file from {0}.', size)
          else:
              _logger.debug('No file to continue.')
docs: Modify the request to resume downloading file.