docs: def run(self, args):
          """
          Process command line arguments and run the given command command
          (start, stop, restart).
          """
          prog = args[0]
          if len(args) < 2:
              self.usage(prog)
              return 1
  
          command = args[1]
          if command == "start":
              self.start()
          elif command == "stop":
              self.stop()
          elif command == "restart":
              self.stop()
              self.start()
          else:
              self.usage(prog)
              return 1
          return 0