code: private void sendEvent(Event event, ComponentDescriptor<?> descriptor, ComponentManager componentManager)
      {
          if (this.observationManager != null) {
              this.observationManager.notify(event, componentManager, descriptor);
          }
      }
docs: Send the event.
  
  @param event the event to send
  @param descriptor the event related component descriptor.
  @param componentManager the event related component manager instance.