protected function getUserGuide() {
    $help = '<h3>' . $this->t('Stanford Sites User Guide') . '</h3>';
    $help .= '<p>' . $this->t('Everything you need to know about how to use, maintain, and launch your Website.') . '</p>';
    $help .= self::getLinkString($this->t('User Guide'), 'https://userguide.sites.stanford.edu', TRUE);
    return ['#markup' => $help];