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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:
 def should_stale_item_be_fetched_synchronously(self, delta, *args, **kwargs):
 """ Return whether to refresh an item synchronously when it is found in the cache but stale """

        if self.fetch_on_stale_threshold is None:
            return False
        return delta > (self.fetch_on_stale_threshold - self.lifetime)