PageState::__toString

public function __toString()
{
	$signer = new Signer;

	return  $signer->sign(base64_encode(serialize(array(
		'step' => $this->step,
		'nid' => $this->nextId,
		'c' => $this->cursor,
		'of' => $this->offset,
		'data' => $this->dataByStep,
	))), static::SIGNER_SALT);
}