<?php namespace SilverStripe\Forms\Tests\ListboxFieldTest; use SilverStripe\Dev\TestOnly; use SilverStripe\ORM\DataObject; class Article extends DataObject implements TestOnly { private static $table_name = 'ListboxFieldTest_Article'; private static $db = [ "Content" => "Text", ]; private static $many_many = [ "Tags" => Tag::class, ]; }