public function GetMailsPage(int $lastKnownTicks = 0, int $pageSize = NULL)
    {
        $result = $this->ExecuteCall("GetMailsPage", (object)[
            "lastKnownTicks" => $lastKnownTicks,
            "pageSize" => $pageSize
        ], GnResponseType::ListGnMail);

        return $result;
    }