code: def __contains__(self, contract):
      assert contract.conId
      return contract.conId in self.conId2Row
  
file_path: ib_insync/examples/qt_ticker_table.py
imports: import asyncio
  import PyQt5.QtWidgets
  from ib_insync import IB, util
  from ib_insync.contract import *
label_desc: Use image node_id 2 for calling the TickerTable obj's underlying member method code with example usage: obj.__contains__(contract) and returns: unknown