silverstripe-framework/tests/php/ORM/VersionableExtensionsTest/TestObject.php

<?php

namespace SilverStripe\ORM\Tests\VersionableExtensionsTest;

use SilverStripe\Dev\TestOnly;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\Versioning\Versioned;

class TestObject extends DataObject implements TestOnly
{
	private static $table_name = 'VersionableExtensionsTest_DataObject';

	private static $db = array(
		'Title' => 'Varchar'
	);

	private static $extensions = [
		Versioned::class,
		TestExtension::class,
	];

	private static $versionableExtensions = [
		TestExtension::class => ['test1', 'test2', 'test3']
	];
}