modules/thunder_article/src/Form/NodeRevisionRevertDefaultForm.php
protected function prepareRevertedRevision(NodeInterface $revision, FormStateInterface $form_state) {
    $revision->setNewRevision();
    $revision->isDefaultRevision(TRUE);
    $revision->setRevisionTranslationAffected(TRUE);
    return $revision;
  }
protected function prepareRevertedRevision(NodeInterface $revision, FormStateInterface $form_state) {
    $revision->setNewRevision();
    $revision->isDefaultRevision(TRUE);
    $revision->setRevisionTranslationAffected(TRUE);
    return $revision;
  }
{@inheritdoc}