@property
    def vsize(self):
        if hasattr(self, "_vsize"):
            return self._vsize
        else:
            return None
Logic to handle getting a new url request, from a bunch of
dataset/ETHPy150Open seandroid-analytics/seal/sealib/device.py/Process.vsize--crossover with--dataset/ETHPy150Open istresearch/scrapy-cluster/crawler/crawling/distributed_scheduler.py/DistributedScheduler.next_request