code: def onExitOk(self, position):
      self.__position = None
      self.info(
          "Position closed at %s"
          % (position.getExitOrder().getExecutionInfo().getPrice())
      )
  
file_path: pyalgotrade/samples/tutorial_bitstamp_1.py
imports: from pyalgotrade.bitstamp import barfeed
  from pyalgotrade.bitstamp import broker
  from pyalgotrade import strategy
  from pyalgotrade.technical import ma
  from pyalgotrade.technical import cross
label_desc: Use image node_id 5 for calling the Strategy obj's underlying member method code with example usage: obj.onExitOk(position) without return types