silverstripe-framework/tests/php/Forms/GridField/GridFieldFilterHeaderTest/NonDataObject.php

<?php

namespace SilverStripe\Forms\Tests\GridField\GridFieldFilterHeaderTest;

use SilverStripe\Dev\TestOnly;
use SilverStripe\View\ArrayData;

class NonDataObject extends ArrayData implements TestOnly
{
    public function summaryFields()
    {
        return ['Title' => 'Title'];
    }
}