Pop\Shipping\Shipping::getResponseCode PHP Метод

    public function getResponseCode()
    {
        return $this->adapter->getResponseCode();
    }

<?php

require_once '../../bootstrap.php';
use Pop\Shipping\Shipping;
use Pop\Shipping\Adapter\Usps;
try {
    $shipping = new Shipping(new Usps('USERNAME', 'PASSWORD', true));
    $shipping->shipTo(array('zip' => '70002'));
    $shipping->shipFrom(array('zip' => '70124'));
    $shipping->setDimensions(array('length' => 12, 'height' => 3, 'width' => 6));
    $shipping->setWeight(5.4);
    $shipping->send(false);
    if ($shipping->isSuccess()) {
        foreach ($shipping->getRates() as $rate => $cost) {
            echo $rate . ': $' . $cost . '<br />' . PHP_EOL;
        }
    } else {
        echo $shipping->getResponseCode() . ' : ' . $shipping->getResponseMessage() . '<br />' . PHP_EOL;
    }
} catch (\Exception $e) {
    echo $e->getMessage() . PHP_EOL . PHP_EOL;
}