RolesOptions.php

<?php

namespace Drupal\rules\TypedData\Options;

use Drupal\Core\Session\AccountInterface;

/**
 * Options provider to return a list of user roles.
 */
class RolesOptions extends OptionsProviderBase {
    
    /**
     * {@inheritdoc}
     */
    public function getPossibleOptions(AccountInterface $account = NULL) {
        // Use parameter FALSE to include 'Anonymous'.
        $roles = user_role_names(FALSE);
        // Sort by the role name.
        asort($roles);
        return $roles;
    }

}