farm-2.x-dev/modules/core/entity/tests/modules/farm_entity_test/src/Plugin/Plan/PlanType/Test.php

<?php

namespace Drupal\farm_entity_test\Plugin\Plan\PlanType;

use Drupal\farm_entity\Plugin\Plan\PlanType\FarmPlanType;

/**
 * Provides the test plan type.
 *
 * @PlanType(
 *   id = "test",
 *   label = @Translation("Test"),
 * )
 */
class Test extends FarmPlanType {

}