docs: def get_history(self, symbols, start, end=None, resolution="1T", tz="UTC"):
          """Get historical market data.
          Connects to Blotter and gets historical data from storage
  
          :Parameters:
              symbols : list
                  List of symbols to fetch history for
              start : datetime / string
                  History time period start date
                  datetime or YYYY-MM-DD[ HH:MM[:SS]] string)
  
          :Optional:
              end : datetime / string
                  History time period end date
                  (datetime or YYYY-MM-DD[ HH:MM[:SS]] string)
              resolution : string
                  History resoluton (Pandas resample, defaults to 1T/1min)
              tz : string
                  History timezone (defaults to UTC)
  
          :Returns:
              history : pd.DataFrame
                  Pandas DataFrame object with historical data for all symbols
          """
          return self.blotter.history(symbols, start, end, resolution, tz)