IsoCodes\Ismn::validate PHP Метод

    public static function validate($ean13)
    {
        return parent::check($ean13, 13);
    }

 /**
  * testInvalidIsmn
  *
  * @param mixed $ssn
  *
  * @dataProvider getInvalidIsmn
  *
  * return void
  */
 public function testInvalidIsmn($ssn)
 {
     $this->assertFalse(Ismn::validate($ssn));
 }