code: def __repr__(self):
      return """
  {class_name}(
      start_session={start_session},
      end_session={end_session},
      capital_base={capital_base},
      data_frequency={data_frequency},
      emission_rate={emission_rate},
      first_open={first_open},
      last_close={last_close},
      trading_calendar={trading_calendar}
  )\
  """.format(
          class_name=self.__class__.__name__,
          start_session=self.start_session,
          end_session=self.end_session,
          capital_base=self.capital_base,
          data_frequency=self.data_frequency,
          emission_rate=self.emission_rate,
          first_open=self.first_open,
          last_close=self.last_close,
          trading_calendar=self._trading_calendar,
      )
  
imports: import logbook
  import pandas
  from zipline.utils.memoize import remember_last
  from zipline.utils.pandas_utils import normalize_date
label_desc: Use image node_id 15 for calling the SimulationParameters obj's underlying member method code with example usage: obj.__repr__() and returns: str