public function testSerializationDeserialization()
{
$obj = new PaymentExecution(self::getJson());
$this->assertNotNull($obj);
$this->assertNotNull($obj->getPayerId());
$this->assertNotNull($obj->getCarrierAccountId());
$this->assertNotNull($obj->getTransactions());
$this->assertEquals(self::getJson(), $obj->toJson());
return $obj;
}