/**
  * Checks access to the support_ticket preview page.
  *
  * @param \Drupal\Core\Session\AccountInterface $account
  *   The currently logged in account.
  * @param \Drupal\support_ticket\SupportTicketInterface $support_ticket_preview
  *   The support_ticket that is being previewed.
  *
  * @return string
  *   A \Drupal\Core\Access\AccessInterface constant value.
  */
 public function access(AccountInterface $account, SupportTicketInterface $support_ticket_preview)
 {
     if ($support_ticket_preview->isNew()) {
         $access_controller = $this->entityManager->getAccessControlHandler('support_ticket');
         return $access_controller->createAccess($support_ticket_preview->bundle(), $account, [], TRUE);
     } else {
         return $support_ticket_preview->access('update', $account, TRUE);
     }
 }