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

    public function testSerializationDeserialization()
    {
        $obj = new BillingInfo(self::getJson());
        $this->assertNotNull($obj);
        $this->assertNotNull($obj->getEmail());
        $this->assertNotNull($obj->getFirstName());
        $this->assertNotNull($obj->getLastName());
        $this->assertNotNull($obj->getBusinessName());
        $this->assertNotNull($obj->getAddress());
        $this->assertNotNull($obj->getLanguage());
        $this->assertNotNull($obj->getAdditionalInfo());
        $this->assertNotNull($obj->getNotificationChannel());
        $this->assertNotNull($obj->getPhone());
        $this->assertEquals(self::getJson(), $obj->toJson());
        return $obj;
    }