3 namespace Drupal\metatag\Plugin\metatag\Tag;
6 * Provides a plugin for the 'canonical' meta tag.
9 * id = "canonical_url",
10 * label = @Translation("Canonical URL"),
11 * description = @Translation("A link to the preferred page location or URL of the content of this page, to help eliminate duplicate content penalties from search engines."),
20 class CanonicalUrl extends LinkRelBase {
21 // Nothing here yet. Just a placeholder class for a plugin.