code: def main(extension, strict_extensions, default_extension):
      """Top level catalyst entry point."""
      # install a logbook handler before performing any other operations
      logbook.StderrHandler().push_application()
      load_extensions(
          default_extension,
          extension,
          strict_extensions,
          os.environ,
      )
  
imports: import errno
  import os
  from functools import wraps
  import re
  import click
  import sys
  import logbook
  import pandas
  from catalyst.marketplace.marketplace import Marketplace
  from six import text_type
  from catalyst.data import bundles
  from catalyst.exchange.exchange_bundle import ExchangeBundle
  from catalyst.exchange.utils.exchange_utils import delete_algo_folder
  from catalyst.utils.cli import Date, Timestamp
  from catalyst.utils.run_algo import _run, load_extensions
  from catalyst.exchange.utils.bundle_utils import EXCHANGE_NAMES
  from catalyst.utils.remote import remote_backtest, get_remote_status
label_desc: Use image node_id 1 for calling a global function with example usage: main(extension, strict_extensions, default_extension) without return types