code: public function generate()
      {
          $GLOBALS['TL_CSS'][] = 'bundles/metamodelscore/css/style.css';
          $arrModule           = $GLOBALS['BE_MOD']['metamodels']['metamodels'];
          // Custom action (if key is not defined in config.php the default action will be called).
          if (\Input::get('key') && isset($arrModule[\Input::get('key')])) {
              Callbacks::call($arrModule[\Input::get('key')], $this, $arrModule);
          }
  
          $act = \Input::get('act');
          if (!strlen($act)) {
              $act = 'showAll';
          }
  
          return $this->dataContainer->getEnvironment()->getController()->handle(new Action($act));
      }
docs: Parse the template.
  
  @return string
  
  @SuppressWarnings(PHPMD.Superglobals)
  @SuppressWarnings(PHPMD.CamelCaseVariableName)