public function uploadFileStandard(string $filename, string $folderId, bool $unzip = false, bool $overwrite = true, bool $notify = true):string
    {
        $chunkUri = $this->getChunkUri('standard', $filename, $folderId, $unzip, $overwrite, $notify);

        $response = $this->client->request(
            'POST',
            $chunkUri['ChunkUri'],
            [
                'multipart' => [
                    [
                        'name'     => 'File1',
                        'contents' => fopen($filename, 'r'),
                    ],
                ],
            ]
        );

        return (string) $response->getBody();
    }