assert self._properties is not None

return self._properties

async def async_wait(self, timeout: float) -> None:

async def async_wait(self, timeout: float, loop: Optional[asyncio.AbstractEventLoop] = None) -> None:

"""Calling task waits for a given number of milliseconds or until notified."""

loop = get_running_loop()

assert loop is not None

await wait_for_future_set_or_timeout(loop, self._new_records_futures, timeout)

await wait_for_future_set_or_timeout(

loop or asyncio.get_running_loop(), self._new_records_futures, timeout

)

def addresses_by_version(self, version: IPVersion) -> List[bytes]:

"""List addresses matching IP version.

if self.load_from_cache(zc, now):

return True

if TYPE_CHECKING:

assert zc.loop is not None

first_request = True

delay = _LISTENER_TIME

next_ = now

delay *= 2

next_ += random.randint(*_AVOID_SYNC_DELAY_RANDOM_INTERVAL)

await self.async_wait(min(next_, last) - now)

await self.async_wait(min(next_, last) - now, zc.loop)

now = current_time_millis()

finally:

zc.async_remove_listener(self)