silverstripe-cms/tests/php/Model/SiteTreeTest_ClassCext.php

<?php

namespace SilverStripe\CMS\Tests;


use SilverStripe\Dev\TestOnly;



class SiteTreeTest_ClassCext extends SiteTreeTest_ClassC implements TestOnly
{
    // Override SiteTreeTest_ClassC definitions
    private static $allowed_children = array(SiteTreeTest_ClassB::class);
}