public function assureContent($sInput, $sReplace = null)
    {
        $oStr = getStr();
        if (!$oStr->strlen($sInput)) {
            if (!isset($sReplace) || !$oStr->strlen($sReplace)) {
                $sReplace = "-";
            }
            $sInput = $sReplace;
        }

        return $sInput;
    }