public function testSerializingPhoneNumber2()
{
$phoneNumber = new PhoneNumber();
$phoneNumber->setCountryCode(1);
$phoneNumber->setNationalNumber(1);
$phoneNumber->setExtension(1);
$phoneNumber->setItalianLeadingZero(1);
$phoneNumber->setNumberOfLeadingZeros(1);
$phoneNumber->setRawInput(1);
$phoneNumber->setCountryCodeSource(1);
$phoneNumber->setPreferredDomesticCarrierCode(1);
$serializedString = serialize($phoneNumber);
$phoneObject2 = unserialize($serializedString);
$this->assertTrue($phoneObject2->equals($phoneNumber));
}