docs: def reqScannerData(
              self, subscription: ScannerSubscription,
              scannerSubscriptionOptions: List[TagValue] = None,
              scannerSubscriptionFilterOptions:
              List[TagValue] = None) -> ScanDataList:
          """
          Do a blocking market scan by starting a subscription and canceling it
          after the initial list of results are in.
  
          This method is blocking.
  
          https://interactivebrokers.github.io/tws-api/market_scanners.html
  
          Args:
              subscription: Basic filters.
              scannerSubscriptionOptions: Unknown.
              scannerSubscriptionFilterOptions: Advanced generic filters.
          """
          return self._run(
              self.reqScannerDataAsync(
                  subscription, scannerSubscriptionOptions,
                  scannerSubscriptionFilterOptions))