/**
  * Get singelton instance
  * @global ilPluginAdmin $ilPluginAdmin
  * @return ilFhoevImportPlugin
  */
 public static function getInstance()
 {
     global $ilPluginAdmin;
     if (self::$instance) {
         return self::$instance;
     }
     include_once './Services/Component/classes/class.ilPluginAdmin.php';
     return self::$instance = ilPluginAdmin::getPluginObject(self::CTYPE, self::CNAME, self::SLOT_ID, self::PNAME);
 }
 /**
  * Show settings screen
  * @global type $tpl
  * @global type $ilTabs 
  */
 protected function configure(ilPropertyFormGUI $form = null)
 {
     global $tpl, $ilTabs;
     $ilTabs->activateTab('settings');
     $ilTabs->addTab('settings', ilFhoevEventPlugin::getInstance()->txt('tab_settings'), $GLOBALS['ilCtrl']->getLinkTarget($this, 'configure'));
     if (!$form instanceof ilPropertyFormGUI) {
         $form = $this->initConfigurationForm();
     }
     $tpl->setContent($form->getHTML());
 }