How to use the cachetools.cache.Cache.__init__ function in cachetools

def __init__(self, maxsize, choice=random.choice, getsizeof=None):
        Cache.__init__(self, maxsize, getsizeof)
        # TODO: use None as default, assing to self.choice directly?
        if choice is random.choice:
            self.__choice = _choice
        else:
            self.__choice = choice

def __init__(self, maxsize, getsizeof=None):
        Cache.__init__(self, maxsize, getsizeof)
        self.__order = collections.OrderedDict()

def __init__(self, maxsize, getsizeof=None):
        Cache.__init__(self, maxsize, getsizeof)
        self.__counter = collections.Counter()

def __init__(self, maxsize, ttl, timer=time.monotonic, getsizeof=None):
        Cache.__init__(self, maxsize, getsizeof)
        self.__root = root = _Link()
        root.prev = root.next = root
        self.__links = collections.OrderedDict()
        self.__timer = _Timer(timer)
        self.__ttl = ttl