About ovverride of base path by temporary_url

[nkmrrrr]

If the host specified in AWS_ENDPOINT is supposed to be used—and the signed URL verifies that the hostname matches—why is there a process in temporary_url that replaces the host name? Isn't that redundant or meaningless?

    /**
     * Get a temporary upload URL for the file at the given path.
     *
     * @param  string  $path
     * @param  \DateTimeInterface  $expiration
     * @param  array  $options
     * @return array
     */
    public function temporaryUploadUrl($path, $expiration, array $options = [])
    {
        $command = $this->client->getCommand('PutObject', array_merge([
            'Bucket' => $this->config['bucket'],
            'Key' => $this->prefixer->prefixPath($path),
        ], $options));

        $signedRequest = $this->client->createPresignedRequest(
            $command, $expiration, $options
        );

        $uri = $signedRequest->getUri();

        // If an explicit base URL has been set on the disk configuration then we will use
        // it as the base URL instead of the default path. This allows the developer to
        // have full control over the base path for this filesystem's generated URLs.

       // ------- here ------------
        if (isset($this->config['temporary_url'])) {
            $uri = $this->replaceBaseUrl($uri, $this->config['temporary_url']);
        }
       // ------- here ------------

        return [
            'url' => (string) $uri,
            'headers' => $signedRequest->getHeaders(),
        ];
    }