Dear Devs,
Composer can't load the subject class.
Please generate separate php files per namespaces/classes in under proper directory path.
<?php
require 'vendor/autoload.php';
$options = new DocuSign\eSign\Api\EnvelopesApi\ListStatusChangesOptions();
// results: Fatal error: Uncaught Error: Class 'DocuSign\eSign\Api\EnvelopesApi\ListStatusChangesOptions' not found in ...
The class in the file src/Api/EnvelopesApi.php instead of src/Api/EnvelopesApi/ListStatusChangesOptions.php regarding to its namespace.
Relating docs to your psr-4 composer setting: http://www.php-fig.org/psr/psr-4
Best regards,
Karoly