code: def onExitOk(self, position):
      execInfo = position.getExitOrder().getExecutionInfo()
      self.info("SELL at $%.2f" % (execInfo.getPrice()))
      self.__position = None
  
file_path: pyalgotrade/samples/tutorial-4.py
imports: from __future__ import print_function
  from pyalgotrade import strategy
  from pyalgotrade.barfeed import quandlfeed
  from pyalgotrade.technical import ma
label_desc: Use image node_id 4 for calling the MyStrategy obj's underlying member method code with example usage: obj.onExitOk(position) without return types