def cache_control(self, value: ResponseCacheControl) -> None:
self._set_or_pop_header("Cache-Control", value.to_header())
def on_update(cache_control: ResponseCacheControl) -> None:
if not cache_control and "cache-control" in self.headers:
del self.headers["cache-control"]
elif cache_control:
self.headers["Cache-Control"] = cache_control.to_header()
