def METHOD_NAME(self, body: bytes) -> None:
    """Called when it gets an HTTP Response."""
    from hathor.p2p.utils import parse_file
    self.log.debug('update got response')
    try:
        text = body.decode()
        new_items = parse_file(text, header=self.header)
    except Exception:
        self.log.exception('failed to parse list')
        return
    self.items = new_items
    self.matches = [self.generate_match(x) for x in self.items]