I edited the NewsletterRole.php file with this:

 * @package newsletter
 */
class NewsletterRole extends DataExtension {
	
	/*function extraStatics() {
		return array(
			'db' => array(
				'BlacklistedEmail' => 'Boolean'
			),
			'has_many' => array(
				'UnsubscribedRecords' => 'UnsubscribeRecord'
			)
		);
	}*/
	
	// after
	static $db = array("BlacklistedEmail" => "Boolean");
	static $has_many = array("UnsubscribedRecords" => "UnsubscribeRecord");

but in admin area click on newsletter tab and page is empty

thank you