How to use the aiomisc.periodic.PeriodicCallback function in aiomisc

counter += 1
        await asyncio.sleep(2)

    periodic = PeriodicCallback(task)
    periodic.start(0.1, event_loop, shield=True)

    await asyncio.sleep(0)

    with pytest.raises(asyncio.CancelledError):
        await periodic.stop()

    assert counter == 1

    # No shield
    counter = 0
    periodic = PeriodicCallback(task)
    periodic.start(0.1, event_loop, shield=False)

    await asyncio.sleep(0)

    with pytest.raises(asyncio.CancelledError):
        await periodic.stop()

    assert counter == 0

async def test_shield(event_loop):
    counter = 0

    async def task():
        nonlocal counter
        counter += 1
        await asyncio.sleep(2)

    periodic = PeriodicCallback(task)
    periodic.start(0.1, event_loop, shield=True)

    await asyncio.sleep(0)

    with pytest.raises(asyncio.CancelledError):
        await periodic.stop()

    assert counter == 1

    # No shield
    counter = 0
    periodic = PeriodicCallback(task)
    periodic.start(0.1, event_loop, shield=False)

    await asyncio.sleep(0)

async def start(self):
        self.logger = self.log.getChild(str(id(self)))

        self.profiler = cProfile.Profile()
        self.periodic = PeriodicCallback(self.save_stats)

        self.profiler.enable()
        self.periodic.start(self.interval)

async def start(self):
        log.warning("Start memory tracer")
        tracemalloc.start()

        self._tracer = PeriodicCallback(self.show_stats)
        self._log = log.getChild(str(id(self)))

        self._snapshot_on_start = self.take_snapshot()
        self._tracer.start(self.interval)

async def start(self):
        namespace = ".".join(
            strip_carbon_ns(item) for item in self.namespace
        )

        client = PROTOCOLS[self.protocol](
            self.host,
            self.port,
            namespace=namespace,
            storage=self.storage(),
            loop=self.loop
        )

        set_client(client)

        self._handle = PeriodicCallback(client.send)
        self._handle.start(self.send_interval, loop=self.loop)
        log.info(
            'Periodic carbon metrics sender started. Send to %s://%s:%d with '
            'interval %rs', self.protocol, self.host, self.port,
            self.send_interval)