contacts_events-8.x-1.x-dev/src/Guard/WorkflowGuard.php

<?php

namespace Drupal\contacts_events\Guard;

use Drupal\state_machine\Guard\GuardInterface;
use Drupal\state_machine\Plugin\Workflow\WorkflowInterface;
use Drupal\state_machine\Plugin\Workflow\WorkflowTransition;
use Drupal\Core\Entity\EntityInterface;

/**
 * Workflow guard for the booking transitions.
 */
class WorkflowGuard implements GuardInterface {

  /**
   * {@inheritdoc}
   */
  public function allowed(WorkflowTransition $transition, WorkflowInterface $workflow, EntityInterface $entity) {
    return NULL;
  }

}