code: def get_simulation_dt(self):
      return self.simulation_dt
  
file_path: catalyst/catalyst/gens/tradesimulation.py
imports: from contextlib2 import ExitStack
  from logbook import Logger, Processor
  from pandas.tslib import normalize_date
  from catalyst.protocol import BarData
  from catalyst.utils.api_support import ZiplineAPI
  from six import viewkeys
  from catalyst.gens.sim_engine import BAR, SESSION_START, SESSION_END, MINUTE_END, BEFORE_TRADING_START_BAR
  from catalyst.constants import LOG_LEVEL
label_desc: Use image node_id 2 for calling the AlgorithmSimulator obj's underlying member method code with example usage: obj.get_simulation_dt() and returns: self