public function sample_code_get_jsonAction(Request $request)
 {
     // define the SOAP client using the url for the service
     $client = new soapclient('http://globalmetals.xignite.com/xGlobalMetals.asmx?WSDL');
     // create an array of parameters
     $param = array();
     // add authentication info
     $xignite_header = new SoapHeader('http://www.xignite.com/services/', "Header", array("Username" => "5E7B30B762CD4E0B9F317540D6E44427"));
     $client->__setSoapHeaders(array($xignite_header));
     // call the service, passing the parameters and the name of the operation
     $result = $client->ListMetals($param);
     // assess the results
     if (is_soap_fault($result)) {
         //echo '<h2>Fault</h2><pre>';
         //print_r($result);
         // echo '</pre>';
     } else {
         // echo '<h2>Result</h2><pre>';
         print_r($result);
         // echo '</pre>';
     }
     // print the SOAP request
     //echo '<h2>Request</h2><pre>' . htmlspecialchars($client->__getLastRequest(), ENT_QUOTES) . '</pre>';
     // print the SOAP request Headers
     //echo '<h2>Request Headers</h2><pre>' . htmlspecialchars($client->__getLastRequestHeaders(), ENT_QUOTES) . '</pre>';
     // print the SOAP response
     //echo '<h2>Response</h2><pre>' . htmlspecialchars($client->__getLastResponse(), ENT_QUOTES) . '</pre>';
     return true;
 }