DisplayExtenderTest3.php

<?php

namespace Drupal\views_test_data\Plugin\views\display_extender;


/**
 * Defines the third display extender test plugin.
 *
 * @ViewsDisplayExtender(
 *   id = "display_extender_test_3",
 *   title = @Translation("Display extender test number three")
 * )
 */
class DisplayExtenderTest3 extends DisplayExtenderTest {
    
    /**
     * {@inheritdoc}
     */
    public function validate() {
        return [
            'Display extender test error.',
        ];
    }

}