public static function getSoapClient()
 {
     if (self::$soapClient != NULL) {
         return self::$soapClient;
     }
     $config = Zend_Registry::get('config');
     self::$soapClient = new Zend_Soap_Client(NULL, array('location' => $config->webservice->client->location, 'uri' => $config->webservice->client->uri, 'login' => $config->webservice->cliente->user));
     return self::$soapClient;
 }
 public function __construct($o = NULL)
 {
     parent::__construct($o);
 }