Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken::serialize PHP Method

    public function serialize()
    {
        return serialize(array($this->credentials, $this->providerKey, parent::serialize()));
    }

 /**
  * {@inheritdoc}
  */
 public function serialize()
 {
     $objectSerialize = serialize($this->organizationContext);
     $string = implode('||', array($objectSerialize, parent::serialize()));
     return $string;
 }