code: def _test_hash_symbol(self):
      # symbol = 'etc_btc'
      # sid = int(
      #     hashlib.sha256(symbol.encode('utf-8')).hexdigest(), 16
      # ) % 10 ** 6
      pass
  
imports: import os
  import tempfile
  from logging import getLogger
  import pandas
  from catalyst.exchange.exchange_bcolz import BcolzExchangeBarReader, BcolzExchangeBarWriter
  from catalyst.exchange.exchange_bundle import ExchangeBundle, BUNDLE_NAME_TEMPLATE
  from catalyst.exchange.utils.bundle_utils import get_bcolz_chunk, get_df_from_arrays
  from catalyst.exchange.utils.datetime_utils import get_start_dt
  from catalyst.exchange.utils.exchange_utils import get_exchange_folder
  from catalyst.exchange.utils.factory import get_exchange
  from catalyst.exchange.utils.stats_utils import df_to_string
  from catalyst.utils.paths import ensure_directory
label_desc: Use image node_id 9 for calling the TestExchangeBundle obj's underlying member method code with example usage: obj._test_hash_symbol() without return types