public function sendingbackupinfo($backupfile) {
        $sizeinfo = new stdClass();
        $sizeinfo->total = number_format($backupfile->get_filesize() / 1000000, 2);
        $html = html_writer::tag('div', get_string('sendingsize', 'hub', $sizeinfo),
            array('class' => 'courseuploadtextinfo'));
        return $html;
    }