/**
  * {@inheritdoc}
  */
 protected function actions(array $form, FormStateInterface $form_state)
 {
     // If only one newsletter, show Subscribe/Unsubscribe instead of Update.
     $actions = parent::actions($form, $form_state);
     if ($this->getOnlyNewsletterId() != NULL) {
         $actions[static::SUBMIT_UPDATE]['#access'] = FALSE;
         $actions[static::SUBMIT_SUBSCRIBE]['#access'] = !$this->entity->isSubscribed($this->getOnlyNewsletterId());
         $actions[static::SUBMIT_UNSUBSCRIBE]['#access'] = $this->entity->isSubscribed($this->getOnlyNewsletterId());
     }
     return parent::actions($form, $form_state);
 }
 /**
  * {@inheritdoc}
  */
 protected function actions(array $form, FormStateInterface $form_state)
 {
     $actions = parent::actions($form, $form_state);
     $actions[static::SUBMIT_UPDATE]['#value'] = $this->t('Save');
     return $actions;
 }