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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 async def _watchdog(self, timeout):
 """Trigger and cancel the watchdog after timeout. Call callback."""

        await asyncio.sleep(timeout, loop=self.loop)
        _LOGGER.debug("Watchdog triggered!")
        await self.cancel_watchdog()
        await self._watchdog_cb()