public function reindexImportedCategories()
    {
        switch ($this->getBehavior()) {
            case Import::BEHAVIOR_DELETE:
                $this->indexDeleteEvents();
                break;
            case Import::BEHAVIOR_REPLACE:
            case Import::BEHAVIOR_APPEND:
            case Import::BEHAVIOR_ADD_UPDATE:

                $this->reindexUpdatedCategories();
                break;
            default:
                throw new \Exception('Unsupported Mode!');
                break;
        }
        return $this;
    }