<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def stop(self):
 """ Method for shutting down the watcher. All config file observers are stopped and their threads joined, along with the worker thread pool. """

        self.shutdown.set()

        for monitor in self.observers:
            monitor.stop()

        self.wind_down()

        for monitor in self.observers:
            monitor.join()

        for thread in self.thread_pool.values():
            thread.join()

        self.work_pool.shutdown()