Google PHP API自动加载文件 - 它是否会替换所有单独的require_once调用？

In much of the documentation, and many of the questions about the Google PHP API client, it shows code that looks like this:

<?php
require_once 'google-api-php-client/src/Google_Client.php';
require_once 'google-api-php-client/src/contrib/Google_StorageService.php';

But is that now unneeded when using the autoloader?

<?php
require_once realpath(dirname(__FILE__).'/google-api-php-client/src/Google/autoload.php');

Yes, it replaces all the individual require_once calls.