protected function importRootParagraph( DOMElement $paragraphNode,
                                            ZipArchive $zip,
                                            array &$paragraphIdMap,
                                            array $domains,
                                            $dbSchema )
    {
        return $this->saveParagraphStructure(
            $this->loadParagraphStructure(
                $paragraphNode,
                $zip,
                $domains,
                $dbSchema
            ),
            $paragraphIdMap
        );
    }