recomputeSingleEntityChangeSet example

        // Entity Insertions         foreach ($uow->getScheduledEntityInsertions() as $category) {
            if (!($category instanceof Category)) {
                continue;
            }

            $category = $this->setPathForCategory($category);

            $md = $em->getClassMetadata(\get_class($category));
            $uow->recomputeSingleEntityChangeSet($md, $category);
        }

        // Entity updates         foreach ($uow->getScheduledEntityUpdates() as $category) {
            if (!($category instanceof Category)) {
                continue;
            }

            $changeSet = $uow->getEntityChangeSet($category);

            if (!isset($changeSet['parent'])) {