code: def reqTickers(
              self, *contracts: List[Contract],
              regulatorySnapshot: bool = False) -> List[Ticker]:
          
          return self._run(
              self.reqTickersAsync(
                  *contracts, regulatorySnapshot=regulatorySnapshot))
docs: Request and return a list of snapshot tickers.
          The list is returned when all tickers are ready.
  
          This method is blocking.
  
          Args:
              contracts: Contracts to get tickers for.
              regulatorySnapshot: Request NBBO snapshots (may incur a fee).