/** * {@inheritdoc} */ public function getLink(FlagInterface $flag, EntityInterface $entity) { $action = $flag->isFlagged($entity) ? 'unflag' : 'flag'; if ($flag->hasActionAccess($action)) { $link = $this->buildLink($action, $flag, $entity); // The actual render array must be in a nested key, due to a bug in // lazy builder handling that does not properly render top-level #type // elements. return ['link' => $link]; } return []; }