CategoryIndexerEvent example

if ($message->allow(self::TREE_UPDATER)) {
                $this->treeUpdater->batchUpdate($ids, CategoryDefinition::ENTITY_NAME, $context);
            }

            if ($message->allow(self::BREADCRUMB_UPDATER)) {
                // listen to name changes                 $this->breadcrumbUpdater->update($ids, $context);
            }
        });

        $this->eventDispatcher->dispatch(new CategoryIndexerEvent($ids, $context, $message->getSkip()));
    }

    public function getOptions(): array
    {
        return [
            self::CHILD_COUNT_UPDATER,
            self::TREE_UPDATER,
            self::BREADCRUMB_UPDATER,
        ];
    }