code: def onBars(self, bars):
      self.info("bla")
      logger.getLogger("custom").info("ble")
  
file_path: pyalgotrade/testcases/logger_test_1.py
imports: import datetime
  from pyalgotrade import strategy
  from pyalgotrade import bar
  from pyalgotrade import logger
  from pyalgotrade.barfeed import membf
label_desc: Use image node_id 2 for calling the BacktestingStrategy obj's underlying member method code with example usage: obj.onBars(bars) without return types