protected function humanDateYesterday($parsedTxt)
    {
        $currentClass    = get_called_class();
        $parsedTxt->date = $currentClass::$humanReadableI18n['yesterday'];
        $parsedTxt->time = $currentClass::$humanReadableI18n['time_part'];
        
        $time = $this->format($currentClass::$humanReadableFormats['time']);
        
        $this->humanParseDateAndTimeText($parsedTxt, '', $time);
    }