public function read()
    {
        if (isset($_SESSION[static::SESSION_NAME])) {
            $sess_table = $this->_uncrypt($_SESSION[static::SESSION_NAME]);
            if (isset($sess_table[static::SESSION_ATTRIBUTESNAME])) {
                $this->attributes = $sess_table[static::SESSION_ATTRIBUTESNAME];
            }
        }
        $this->addSessionTable(static::SESSION_ATTRIBUTESNAME, $this->attributes);
        $this->is_loaded = true;
        return $this;
    }