docs: public static <T> FastEvent<T> of(Class<T> type, BeanManagerImpl manager, ObserverNotifier notifier, Annotation... qualifiers) {
          ResolvedObservers<T> resolvedObserverMethods = notifier.<T> resolveObserverMethods(type, qualifiers);
          if (resolvedObserverMethods.isMetadataRequired()) {
              EventMetadata metadata = new EventMetadataImpl(type, null, qualifiers);
              CurrentEventMetadata metadataService = manager.getServices().get(CurrentEventMetadata.class);
              return new FastEventWithMetadataPropagation<T>(resolvedObserverMethods, metadata, metadataService);
          } else {
              return new FastEvent<T>(resolvedObserverMethods);
          }
      }