@classmethod
def is_listening_for(cls, event):
    for (id, sub) in Subscriptions.store.items():
        if match_any_if_any(event, sub.events):
            return True
    return False
@classmethod
def is_listening_for(cls, event):
    for (id, sub) in Subscriptions.store.items():
        if match_any_if_any(event, sub.events):
            return True
    return False