public function testIndex()
 {
     /* Initiate the service class */
     $service = new EphorusService(false);
     /* Get the index address */
     $index_address = DLEApi::getSetting('index_address');
     if ($index_address == '') {
         return false;
     }
     $curl = curl_init($index_address);
     curl_setopt($curl, CURLOPT_RETURNTRANSFER, false);
     curl_setopt($curl, CURLOPT_FAILONERROR, true);
     if (DLEApi::getProxySetting('host')) {
         curl_setopt($curl, CURLOPT_PROXY, DLEApi::getProxySetting('host') . ':' . DLEApi::getProxySetting('port'));
     }
     if (!curl_exec($curl) || !strpos($index_address, 'wsdl')) {
         return false;
     }
     /* Initiate soap */
     $soap_client = $service->initSoapClient($index_address, 'visibility');
     /* Try to change file's visibility index */
     try {
         @$soap_client->IndexDocument(array('documentGuid' => '123456-123456-123456-123456', 'indexType' => 2));
         return true;
     } catch (SoapFault $e) {
         return true;
     }
 }