def save(self, filename=None):
        filename = Path(filename) if filename is not None else self.filename
        with filename.open("w") as f:
            f.write(self.yaml)
def __init__(self, api, name):
        super(V1Routing, self).__init__(api, name,
                                        description='Current version of navitia API',
                                        status='current',
                                        index_endpoint='index')