How to use the prom2teams.root function in prom2teams

def setup_logging(application):
    with open(os.path.join(root, 'config/logging.yml'), 'rt') as f:
        config = yaml.safe_load(f.read())

        for logger in config['loggers']:
            config['loggers'][logger]['level'] = application.config['LOG_LEVEL']
        config['root']['level'] = application.config['LOG_LEVEL']
        config['loggers']['prom2teams_app']['level'] = 'INFO'

        environment = os.getenv('APP_ENVIRONMENT', 'None')
        if environment == 'pro' or environment == 'pre':
            config['handlers']['file']['filename'] = application.config['LOG_FILE_PATH']
            for logger in config['loggers']:
                config['loggers'][logger]['handlers'] = ['file']
            config['root']['handlers'] = ['file']
        else:
            del config['handlers']['file']

def config_app(application):
    try:
        # Load the default configuration
        application.config.from_object('prom2teams.config.settings')

        # Load the configuration from the instance folder
        instance = os.path.join(os.path.join(root, os.pardir), 'instance')
        config = os.path.join(instance, 'config.py')
        if os.path.isdir(instance) and os.path.exists(config):
            application.config.from_pyfile(config)

        # Load the file specified by the APP_CONFIG_FILE environment variable
        # Variables defined here will override those in the default configuration
        if 'APP_CONFIG_FILE' in os.environ:
            application.config['APP_CONFIG_FILE'] = os.environ.get('APP_CONFIG_FILE')
            config_provided = _config_provided(os.getenv('APP_CONFIG_FILE'))
            _update_application_configuration(application, config_provided)

        # Parse and load command line properties
        # Variables defined here will override previous configuration
        command_line_args = _config_command_line()
        if command_line_args.configpath:
            application.config['APP_CONFIG_FILE'] = command_line_args.configpath