public function deleteBulk(array $themes, User $user)
    {
        // Reload the list of questions to delete
        $toDelete = $this->repository->findByUuids($themes);

        $this->om->startFlushSuite();
        foreach ($toDelete as $theme) {
            $this->delete($theme, $user, true);
        }
        $this->om->endFlushSuite();
    }