/**
* Gets Json String of Object Agreement
* @return string
*/
public static function getJson()
{
return '{"id":"TestSample","state":"TestSample","name":"TestSample","description":"TestSample","start_date":"TestSample","payer":' . PayerTest::getJson() . ',"shipping_address":' . AddressTest::getJson() . ',"override_merchant_preferences":' . MerchantPreferencesTest::getJson() . ',"override_charge_models":' . OverrideChargeModelTest::getJson() . ',"plan":' . PlanTest::getJson() . ',"create_time":"TestSample","update_time":"TestSample","links":' . LinksTest::getJson() . '}';
}