How to use the green.config.files_loaded function in green

if args.completion_file:
        print(os.path.join(os.path.dirname(__file__), 'shell_completion.sh'))
        return 0

    # Argument-completion for bash and zsh (for test-target completion)
    if args.completions:
        print(getCompletions(args.targets))
        return 0

    # Option-completion for bash and zsh
    if args.options:
        print('\n'.join(sorted(args.store_opt.options)))
        return 0

    # Add debug logging for stuff that happened before this point here
    if config.files_loaded:
        debug("Loaded config file(s): {}".format(
            ', '.join(config.files_loaded)))

    # Discover/Load the test suite
    if testing:
        test_suite = None
    else:  # pragma: no cover
        loader = GreenTestLoader()
        test_suite = loader.loadTargets(args.targets,
                                        file_pattern=args.file_pattern)

    # We didn't even load 0 tests...
    if not test_suite:
        debug(
            "No test loading attempts succeeded.  Created an empty test suite.")
        test_suite = GreenTestSuite()

return 0

    # Argument-completion for bash and zsh (for test-target completion)
    if args.completions:
        print(getCompletions(args.targets))
        return 0

    # Option-completion for bash and zsh
    if args.options:
        print('\n'.join(sorted(args.store_opt.options)))
        return 0

    # Add debug logging for stuff that happened before this point here
    if config.files_loaded:
        debug("Loaded config file(s): {}".format(
            ', '.join(config.files_loaded)))

    # Discover/Load the test suite
    if testing:
        test_suite = None
    else:  # pragma: no cover
        loader = GreenTestLoader()
        test_suite = loader.loadTargets(args.targets,
                                        file_pattern=args.file_pattern)

    # We didn't even load 0 tests...
    if not test_suite:
        debug(
            "No test loading attempts succeeded.  Created an empty test suite.")
        test_suite = GreenTestSuite()

    # Actually run the test_suite