serialize() public method

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