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

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

def __init__(self, maxsize, getsizeof=None):
        if getsizeof is not None:
            Cache.__init__(self, maxsize, lambda e: getsizeof(e[0]))
        else:
            Cache.__init__(self, maxsize)

def __init__(self, maxsize, getsizeof=None):
        if getsizeof is not None:
            Cache.__init__(self, maxsize, lambda e: getsizeof(e[0]))
        else:
            Cache.__init__(self, maxsize)
        root = _Link()
        root.prev = root.next = root
        self.__root = root

def __init__(self, maxsize, getsizeof=None):
        if getsizeof is not None:
            Cache.__init__(self, maxsize, lambda e: getsizeof(e[0]))
        else:
            Cache.__init__(self, maxsize)
        root = _Link()
        root.prev = root.next = root
        self.__root = root

def __init__(self, maxsize, ttl=MAXTTL, timer=time.time, 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
        # CHANGE: .set() is the same as setitem
        self.set = self.__setitem__

def __init__(self, maxsize, getsizeof=None):
        if getsizeof is not None:
            Cache.__init__(self, maxsize, lambda e: getsizeof(e[0]))
        else:
            Cache.__init__(self, maxsize)