/**
* Gets Json String of Object PaymentDefinition
* @return string
*/
public static function getJson()
{
return '{"id":"TestSample","name":"TestSample","type":"TestSample","frequency_interval":"TestSample","frequency":"TestSample","cycles":"TestSample","amount":' . CurrencyTest::getJson() . ',"charge_models":' . ChargeModelTest::getJson() . '}';
}