/**
  * Sets the navigation of this plugin.
  *
  * @deprecated
  */
 function setNavigation(StudipPluginNavigation $navigation)
 {
     $this->navigation = $navigation;
     if ($navigation instanceof PluginNavigation) {
         $navigation->setPlugin($this);
     }
     $active_plugin = PluginEngine::getCurrentPluginId();
     // make sure navigation for current plugin is active
     if (isset($active_plugin) && $active_plugin == $this->getPluginId()) {
         if ($navigation->activeSubNavigation() == NULL) {
             $navigation->setActive(true);
         }
     }
 }