public function getFilterboxConfigurationMock($filterBoxIdentifier)
 {
     $configurationBuilderMock = Tx_PtExtlist_Tests_Domain_Configuration_ConfigurationBuilderMock::getInstance();
     $mockFilterConfiguration1 = $this->getFilterConfigurationMock('filter1', $filterBoxIdentifier);
     $mockFilterConfiguration2 = $this->getFilterConfigurationMock('filter2', $filterBoxIdentifier);
     $filterBoxConfiguration = new Tx_PtExtlist_Domain_Configuration_Filters_FilterboxConfig($configurationBuilderMock, $filterBoxIdentifier, array());
     $filterBoxConfiguration->addItem($mockFilterConfiguration1);
     $filterBoxConfiguration->addItem($mockFilterConfiguration2);
     return $filterBoxConfiguration;
 }