public function testThrowExceptionOnEmptyFilterboxIdentifier()
 {
     $configurationBuilder = new Tx_PtExtlist_Domain_Configuration_ConfigurationBuilder($this->settings, 'test');
     try {
         $configurationBuilder->getFilterboxConfigurationByFilterboxIdentifier('');
         $this->fail('No exception thrown on empty filterbox identifier');
     } catch (Exception $e) {
         return;
     }
 }