protected function createBasicDocument()
    {
        $this->doc->loadXML(
            '<?xml version="1.0" encoding="UTF-8"?>' .
            '<xliff xmlns="urn:oasis:names:tc:xliff:document:1.2" version="1.2"><file><body></body></file></xliff>',
            LIBXML_NSCLEAN
        );

        // Set some basic information.
        $this->setDataType('plaintext');
        $this->setDate(time());
        $this->setOriginal('');
        $this->setSrcLang('en');
        $this->setTgtLang('en');
    }