public function RenderBlock($block)
    {
        $templateFile = $this->BuiltInTemplateFile();
        $blockFile = Path::AddExtension($templateFile, $block, true);
        $blockFileExt = Path::AddExtension($blockFile, 'phtml');
        if (!File::Exists($blockFileExt))
        {
            return '';
        }
        ob_start();
        require $blockFileExt;
        return ob_get_clean();
    }