How to use the rele.config.load_subscriptions_from_paths function in rele

def test_loads_subscriptions_when_they_are_class_based(self):
        subscriptions = load_subscriptions_from_paths(
            ["tests.subs"],
            sub_prefix="test",
            filter_by=[lambda attrs: attrs.get("lang") == "en"],
        )

        assert len(subscriptions) == 2
        klass_sub = subscriptions[0]
        assert isinstance(klass_sub, Subscription)
        assert klass_sub.name == "test-alternative-cool-topic"
        assert klass_sub({"id": 4}, lang="en") == 4

def subscriptions(self):
        return load_subscriptions_from_paths(
            ["tests.test_config"],
            sub_prefix="test",
            filter_by=[lambda args: args.get("lang") == "en"],
        )

def handle(self, *args, **options):
        headers = ["Topic", "Subscriber(s)", "Sub"]

        subscription_paths = discover_subs_modules()
        subs = sorted(
            load_subscriptions_from_paths(subscription_paths),
            key=lambda sub: sub.topic,
        )
        sub_data = [(sub.topic, sub.name, sub._func.__name__) for sub in subs]

        self.stdout.write(tabulate(sub_data, headers=headers))