code: def account(self):
      pass
  
imports: import abc
  from abc import ABCMeta, abstractmethod, abstractproperty
  from datetime import timedelta
  from time import sleep
  import numpy
  import pandas
  from catalyst.constants import LOG_LEVEL
  from catalyst.data.data_portal import BASE_FIELDS
  from catalyst.exchange.exchange_bundle import ExchangeBundle
  from catalyst.exchange.exchange_errors import MismatchingQuoteCurrencies, SymbolNotFoundOnExchange, PricingDataNotLoadedError, NoDataAvailableOnExchange, NoValueForField, NoCandlesReceivedFromExchange, TickerNotFoundError, NotEnoughCashError
  from catalyst.exchange.utils.datetime_utils import get_delta, get_periods_range, get_periods, get_start_dt, get_frequency, get_candles_number_from_minutes
  from catalyst.exchange.utils.exchange_utils import get_exchange_symbols, resample_history_df, has_bundle, get_candles_df
  from logbook import Logger
label_desc: Use image node_id 2 for calling the Exchange obj's underlying member method code with example usage: obj.account() without return types