code: def notify_trade(self, trade):
      print("-" * 50, "TRADE BEGIN", datetime.datetime.now())
      print(trade)
      print("-" * 50, "TRADE END")
  
file_path: backtrader/samples/oandatest/oandatest.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import datetime
  import backtrader
  from backtrader.utils import flushfile
label_desc: Use image node_id 5 for calling the TestStrategy obj's underlying member method code with example usage: obj.notify_trade(trade) without return types