metatag-8.x-1.x-dev/src/Plugin/DataType/Metatag.php

<?php

namespace Drupal\metatag\Plugin\DataType;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\TypedData\Attribute\DataType;
use Drupal\Core\TypedData\Plugin\DataType\StringData;

/**
 * The metatag data type.
 *
 * The plain value of a metatag is a serialized object represented as a string.
 */
#[DataType(
 id: "metatag",
 label: new TranslatableMarkup("Metatag")
)]
class Metatag extends StringData implements MetatagInterface {

}