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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 flush(self, hard=False):
 """Drop existing entries from the cache. Args: hard (bool):
 If True, all current entries are flushed from the server(s), which affects all users. If False, only the local process is affected. """

        if not self.servers:
            return
        if hard:
            self.client.flush_all()
            self.reset_stats()
        else:
            from uuid import uuid4
            tag = uuid4().hex
            if self.debug:
                tag = "flushed" + tag
            self.current = tag