code: def Shutdown(self):
          
          logger.debug("Nodeleader shutting down")
  
          self.stop_peer_check_loop()
          self.peer_check_loop_deferred = None
  
          self.stop_check_bcr_loop()
          self.check_bcr_loop_deferred = None
  
          self.stop_memcheck_loop()
          self.memcheck_loop_deferred = None
  
          self.stop_blockheight_loop()
          self.blockheight_loop_deferred = None
  
          for p in self.Peers:
              p.Disconnect()
docs: Disconnect all connected peers.