code: def createStrategy(self):
      barFeed = self.loadDailyBarFeed()
      strat = TestStrategy(barFeed, 1000)
      return strat
  
imports: import datetime
  from .None import common
  from pyalgotrade import strategy
  from pyalgotrade import broker
  from pyalgotrade.barfeed import yahoofeed
label_desc: Use image node_id 2 for calling the StrategyTestCase obj's underlying member method code with example usage: obj.createStrategy() and returns: strat