code: def notify_data(self, data, status, *args, **kwargs):
      print("*" * 5, "DATA NOTIF:", data._getstatusname(status), *args)
      if (
          self.datas[0]._laststatus == self.datas[0].LIVE
          and self.datas[1]._laststatus == self.datas[1].LIVE
      ):
          self.data_live = True
  
file_path: backtrader/samples/ib-cash-bid-ask/ib-cash-bid-ask.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import backtrader
  import datetime
label_desc: Use image node_id 2 for calling the St obj's underlying member method code with example usage: obj.notify_data(data, status) without return types