How to use the rele.subscription.Subscription function in rele

def subscription_from_attribute(attribute):
    try:
        if isinstance(attribute, Subscription):
            subscription = attribute
        elif issubclass(attribute, Subscription):
            subscription = attribute()
        else:
            return None
    except TypeError:
        # If attribute is not a class, TypeError is raised when testing issubclass
        return None
    return subscription

def decorator(func):
        return Subscription(
            func=func, topic=topic, prefix=prefix, suffix=suffix, filter_by=filter_by,
        )

def subscription_from_attribute(attribute):
    try:
        if isinstance(attribute, Subscription):
            subscription = attribute
        elif issubclass(attribute, Subscription):
            subscription = attribute()
        else:
            return None
    except TypeError:
        # If attribute is not a class, TypeError is raised when testing issubclass
        return None
    return subscription