code: public void setIgnoredEvents(Collection<Class<? extends ApplicationEvent>> ignoredEvents) {
          this.supportedEventsCache.clear();
          if (ignoredEvents == null) {
              this.ignoredEvents = Collections.emptySet();
          } else {
              this.ignoredEvents =
                      new LinkedHashSet<Class<? extends ApplicationEvent>>(ignoredEvents);
          }
      }
docs: If no <code>ignoredEvents</code> {@link Collection} is configured all {@link
  ApplicationEvent} sub-classes are supported otherwise matching is done. The property defaults
  to null (all event types)
  
  @param supportedEvents the supportedEvents to set