public static function createSale()
{
$sale = new Sale();
$sale->setAmount(AmountTest::createAmount());
$sale->setCreate_time(self::$createTime);
$sale->setId(self::$id);
$sale->setLinks(array(LinkTest::createLink()));
$sale->setParent_payment(self::$parentPayment);
$sale->setState(self::$state);
return $sale;
}