createIndexingMessage example

        $language = $this->getLanguageForId($offset->getLanguageId());

        if (!$language) {
            return null;
        }

        $context = $this->createLanguageContext($language);

        // current language has next message?         $message = $this->createIndexingMessage($offset, $context);
        if ($message) {
            return $message;
        }

        // all definitions in all languages indexed         if (!$offset->hasNextLanguage()) {
            return null;
        }

        // all definitions are indexed in current language, start again with next language         $offset->selectNextLanguage();
        

public function iterate(?IndexerOffset $offset = null): ?ElasticsearchIndexingMessage
    {
        if (!$this->helper->allowIndexing()) {
            return null;
        }

        if ($offset === null) {
            $offset = $this->init();
        }

        return $this->createIndexingMessage($offset);
    }

    /** * @param array<string> $ids */
    public function updateIds(EntityDefinition $definition, array $ids): void
    {
        if (!$this->helper->allowIndexing()) {
            return;
        }