public function addHelpText(string $text, string $link = null, $critical = false)
    {
        if(!$link) {
            $this->help_texts[] = $text;
        }else{
            $this->help_texts[] = [$text, $link];
        }
        if($critical)
            $this->critical_help_texts = true;

        return $this;
    }