def METHOD_NAME(self):
    super().METHOD_NAME()
    self.tradeitem1 = create_object(key="TradeItem1", location=self.char1)
    self.tradeitem2 = create_object(key="TradeItem2", location=self.char1)
    self.tradeitem3 = create_object(key="TradeItem3", location=self.char2)