public function testSerializationDeserialization()
{
$obj = new PaymentCard(self::getJson());
$this->assertNotNull($obj);
$this->assertNotNull($obj->getId());
$this->assertNotNull($obj->getNumber());
$this->assertNotNull($obj->getType());
$this->assertNotNull($obj->getExpireMonth());
$this->assertNotNull($obj->getExpireYear());
$this->assertNotNull($obj->getStartMonth());
$this->assertNotNull($obj->getStartYear());
$this->assertNotNull($obj->getCvv2());
$this->assertNotNull($obj->getFirstName());
$this->assertNotNull($obj->getLastName());
$this->assertNotNull($obj->getBillingCountry());
$this->assertNotNull($obj->getBillingAddress());
$this->assertNotNull($obj->getExternalCustomerId());
$this->assertNotNull($obj->getStatus());
$this->assertNotNull($obj->getCardProductClass());
$this->assertNotNull($obj->getValidUntil());
$this->assertNotNull($obj->getIssueNumber());
$this->assertNotNull($obj->getLinks());
$this->assertEquals(self::getJson(), $obj->toJson());
return $obj;
}