public function pix($text, Mustache_LambdaHelper $helper) {
        // Split the text into an array of variables.
        $key = strtok($text, ",");
        $key = trim($helper->render($key));
        $component = strtok(",");
        $component = trim($helper->render($component));
        if (!$component) {
            $component = '';
        }
        $component = $helper->render($component);
        $text = strtok("");
        // Allow mustache tags in the last argument.
        $text = trim($helper->render($text));

        return trim($this->renderer->pix_icon($key, $text, $component));
    }