/home/kueuepay/public_html/vendor/guzzlehttp/promises/src/Is.php

<?php

declare(strict_types=1);

namespace GuzzleHttp\Promise;

final class Is
{
    /**
     * Returns true if a promise is pending.
     */
    public static function pending(PromiseInterface $promise): bool
    {
        return $promise->getState() === PromiseInterface::PENDING;
    }

    /**
     * Returns true if a promise is fulfilled or rejected.
     */
    public static function settled(PromiseInterface $promise): bool
    {
        return $promise->getState() !== PromiseInterface::PENDING;
    }

    /**
     * Returns true if a promise is fulfilled.
     */
    public static function fulfilled(PromiseInterface $promise): bool
    {
        return $promise->getState() === PromiseInterface::FULFILLED;
    }

    /**
     * Returns true if a promise is rejected.
     */
    public static function rejected(PromiseInterface $promise): bool
    {
        return $promise->getState() === PromiseInterface::REJECTED;
    }
}

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Response Codes

Kueue Pay API responses include standard HTTP status codes to indicate the success or failure of a request. Successful responses will have a status code of 200 OK, while various error conditions will be represented by different status codes along with error messages in the response body.