code: def cancelScannerSubscription(self, dataList: ScanDataList):
          
          self.client.cancelScannerSubscription(dataList.reqId)
          self.wrapper.endSubscription(dataList)
docs: Cancel market data subscription.
  
          https://interactivebrokers.github.io/tws-api/market_scanners.html
  
          Args:
              dataList: The scan data list that was obtained from
                  :meth:`.reqScannerSubscription`.