protected function addIndexQueueItemIndexingProperties(array $mountPage, array $mountedPages)
    {
        $mountIdentifier = $this->getMountPointIdentifier($mountPage);
        $mountPageItems = $this->queueItemRepository->findAllIndexQueueItemsByRootPidAndMountIdentifierAndMountedPids($this->site->getRootPageId(), $mountIdentifier, $mountedPages);

        foreach ($mountPageItems as $mountPageItemRecord) {
            /* @var Item $mountPageItem */
            $mountPageItem = GeneralUtility::makeInstance(Item::class, /** @scrutinizer ignore-type */ $mountPageItemRecord);
            $mountPageItem->setIndexingProperty('mountPageSource', $mountPage['mountPageSource']);
            $mountPageItem->setIndexingProperty('mountPageDestination', $mountPage['mountPageDestination']);
            $mountPageItem->setIndexingProperty('isMountedPage', '1');

            $mountPageItem->storeIndexingProperties();
        }
    }