/**
  * Checks whether response has an error.
  * @return      boolean
  * @since       3
  */
 protected function _isError($aProducts)
 {
     if (isset($aProducts['Error']['Code'])) {
         return true;
     }
     if (isset($aProducts['Items']['Request']['Errors'])) {
         return true;
     }
     return parent::_isError($aProducts);
 }
 /**
  * Sets up properties.
  */
 public function __construct($aoUnitOptions = array())
 {
     parent::__construct($aoUnitOptions);
     $this->_setProperties();
 }