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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 restart(self):
 """ Tells the HAProxy control object to restart the process. If it's been fewer than `restart_interval` seconds since the previous restart, it will wait until the interval has passed. This staves off situations where the process is constantly restarting, as it is possible to drop packets for a short interval while doing so. """

        delay = (self.last_restart - time.time()) + self.restart_interval

        if delay > 0:
            time.sleep(delay)

        self.control.restart()

        self.last_restart = time.time()
        self.restart_required = False