public function setSessionId($session_id=null)
    {
        $this->session_id= ($session_id!== null) ? $session_id : null;

        return $this;
    }
public function setSessionId($session_id=null)
    {
        $this->session_id= ($session_id!== null) ? $session_id : null;

        return $this;
    }
public function setSessionId ( $ session_id = null ) { $ this -> session_id = ( $ session_id !== null ) ? $ session_id : null ; return $ this ; }
Set the session id that this token is associated to ..
@param string $session_id Session id
Set the session id that this token is associated to ..