hasChangedTime example

->setTranslatable(TRUE);
    }

    if (!$this->hasCreatedTime()) {
      $definitions['content_translation_created'] = BaseFieldDefinition::create('created')
        ->setLabel(t('Translation created time'))
        ->setDescription(t('The Unix timestamp when the translation was created.'))
        ->setRevisionable(TRUE)
        ->setTranslatable(TRUE);
    }

    if (!$this->hasChangedTime()) {
      $definitions['content_translation_changed'] = BaseFieldDefinition::create('changed')
        ->setLabel(t('Translation changed time'))
        ->setDescription(t('The Unix timestamp when the translation was most recently saved.'))
        ->setRevisionable(TRUE)
        ->setTranslatable(TRUE);
    }

    return $definitions;
  }

  /** * Checks whether the entity type supports author natively. * * @return bool * TRUE if metadata is natively supported, FALSE otherwise. */