if ($parentObject === null && !$this->resolve($transport, $object, $vOptions)) {
                    $transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not resolve vehicle for object of class {$vClass}; criteria: " . print_r($criteria, true));
                    if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not resolve vehicle: ' . print_r($vOptions, true));
                }