*/
  private static final LoadingCache<Class<?>, ImmutableList<Method>> subscriberMethodsCache =
      CacheBuilder.newBuilder()
          .weakKeys()
          .build(CacheLoader.from(SubscriberRegistry::getAnnotatedMethodsNotCached));

  /**
   * Returns all subscribers for the given listener grouped by the type of event they subscribe to.
   */
  private Multimap<Class<?>, Subscriber> findAllSubscribers(Object listener) {