<?php namespace SilverStripe\View\Tests\ViewableDataTest; use SilverStripe\Core\Extension; use SilverStripe\Dev\TestOnly; class ViewableDataTestExtension extends Extension implements TestOnly { private function privateMethodFromExtension(): string { return 'Private function'; } protected function protectedMethodFromExtension(): string { return 'Protected function'; } public function publicMethodFromExtension(): string { return 'Public function'; } }