How to use the xalpha.universal.lru_cache_time function in xalpha

def test_cache_time():
    class F:
        def __init__(self):
            self.r = 0

        def __call__(self):
            self.r += 1
            return self.r

        __name__ = "F"

    f = xa.universal.lru_cache_time(ttl=5)(F())

    assert f() == 1
    assert f() == 1
    time.sleep(5)
    assert f() == 2

@xa.universal.lru_cache_time(ttl=1800)
def cached_get_bar(code, *args, **kws):
    if code.startswith("commodities/"):
        kws["handler"] = False
        return xa.get_bar(code, *args, **kws)
    return None

@xa.universal.lru_cache_time(ttl=180)
def cached_get_rt(code, **kws):
    return xa.get_rt(code, handler=False)