ValidPathConstraint.php

<?php

namespace Drupal\Core\Path\Plugin\Validation\Constraint;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\Validation\Attribute\Constraint;
use Symfony\Component\Validator\Attribute\HasNamedArguments;
use Symfony\Component\Validator\Constraint as SymfonyConstraint;

/**
 * Validation constraint for valid system paths.
 */
class ValidPathConstraint extends SymfonyConstraint {
  public function __construct(mixed $options = NULL, public $message = "Either the path '%link_path' is invalid or you do not have access to it.", ?array $groups = NULL, mixed $payload = NULL) {
    parent::__construct($options, $groups, $payload);
  }

}