/**
  * Called on special pages after the special tab is added but before variants have been added.
  * @see https://www.mediawiki.org/wiki/Manual:Hooks/SkinTemplateNavigation::SpecialPage
  *
  * @since 0.1
  *
  * @param SkinTemplate $sktemplate
  * @param array $links
  *
  * @return false
  */
 public static function onSpecialPageTabs(SkinTemplate &$sktemplate, array &$links)
 {
     $textParts = SpecialPageFactory::resolveAlias($sktemplate->getTitle()->getText());
     if ($textParts[0] === 'Enroll' && !is_null($textParts[1]) && trim($textParts[1]) !== '') {
         // Remove the token from the title if needed.
         if (!$sktemplate->getRequest()->getCheck('wptoken')) {
             $textParts[1] = explode('/', $textParts[1]);
             if (count($textParts[1]) > 1) {
                 array_pop($textParts[1]);
             }
             $textParts[1] = implode('/', $textParts[1]);
         }
         $title = EPCourse::getTitleFor($textParts[1]);
         if (!is_null($title)) {
             self::displayTabs($sktemplate, $links, $title);
         }
     }
     return false;
 }