How to use the xdg.BaseDirectory.load_config_paths function in xdg

def load():
    for config_path in BaseDirectory.load_config_paths('buildhck', 'config.yaml'):
        with open(config_path) as f:
            obj = yaml.load(f)
            if obj:
                config.update(obj)
    if not path.isdir(build_directory()):
        makedirs(build_directory())

def get_config_files(filename):
    """
    Iterator to @filename in all
    config paths, with most important (takes precendence)
    files first
    """
    return base.load_config_paths(PACKAGE_NAME, filename) or ()

def load_config_paths(*resource):
        import xdg.BaseDirectory
        return xdg.BaseDirectory.load_config_paths(*resource)

def get_config_paths(appname, filename):
    paths = reversed(list(xdg.BaseDirectory.load_config_paths(appname)))

    config_paths = []

    for path in paths:
        config_paths.append(os.path.join(path, filename))

    return config_paths

def load_config_paths(*resource):
        import xdg.BaseDirectory
        return xdg.BaseDirectory.load_config_paths(*resource)

def lookup_menu_files(filename):
    return [f for f in xdg.BaseDirectory.load_config_paths('menus/' + filename)]

def load():
    dct = {}
    for filepath in BaseDirectory.load_config_paths("mup/mup.yaml"):
        with open(filepath) as f:
            try:
                dct.update(yaml.load(f))
            except Exception as exc:
                logging.exception("Failed to load {}, skipping it.".format(filepath))

    return dct

def load_config(app, filename):
    config.clear()
    for filename in BaseDirectory.load_config_paths('pb', filename):
        with open(filename) as f:
            obj = yaml.load(f)
            config.update(obj)
    if app:
        app.config.from_mapping(config)
    return config

def _read(self):
		self._save = self._save_xdg
		for d in BaseDirectory.load_config_paths(CONFIG):
			path = os.path.join(d, DOMAINS)
			if os.path.exists(path):
				return self._read_file(path)
		else:
			return {}