PayPal\Test\Api\DetailedRefundTest::testSerializationDeserialization PHP Method

    public function testSerializationDeserialization()
    {
        $obj = new DetailedRefund(self::getJson());
        $this->assertNotNull($obj);
        $this->assertNotNull($obj->getCustom());
        $this->assertNotNull($obj->getInvoiceNumber());
        $this->assertNotNull($obj->getRefundToPayer());
        $this->assertNotNull($obj->getRefundToExternalFunding());
        $this->assertNotNull($obj->getRefundFromTransactionFee());
        $this->assertNotNull($obj->getRefundFromReceivedAmount());
        $this->assertNotNull($obj->getTotalRefundedAmount());
        $this->assertEquals(self::getJson(), $obj->toJson());
        return $obj;
    }