code: def stop(self):
      self.__stop = True
  
imports: import threading
  import time
  from six.moves import queue
  from pyalgotrade import broker
  from pyalgotrade.bitstamp import httpclient
  from pyalgotrade.bitstamp import common
label_desc: Use image node_id 6 for calling the TradeMonitor obj's underlying member method code with example usage: obj.stop() without return types