public function undeletePage($title, $reason = null, $timestamp = null, $watchlist = null)
	{
		// Get the token.
		$token = $this->getToken($title, 'undelete');

		// Build the request path.
		$path = '?action=undelete';

		// Build the request data.
		$data = array(
			'title'     => $title,
			'token'     => $token,
			'reason'    => $reason,
			'timestamp' => $timestamp,
			'watchlist' => $watchlist,
		);

		// Send the request.
		$response = $this->client->post($this->fetchUrl($path), $data);

		return $this->validateResponse($response);
	}