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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 run(self):
        '''
        Start the update threads
        '''
        salt.utils.process.appendproctitle(self.__class__.__name__)
        # Clean out the fileserver backend cache
        salt.daemons.masterapi.clean_fsbackend(self.opts)

        for interval in self.buckets:
            self.update_threads[interval] = threading.Thread(
                target=self.update_fileserver,
                args=(interval, self.buckets[interval]),
            )
            self.update_threads[interval].start()

        # Keep the process alive
        while True:
            time.sleep(60)