public function render()
    {
        $cloner = new VarCloner();
        $dumper = ('cli' === PHP_SAPI ? new CliDumper : new HtmlDumper);
        $output = fopen('php://memory', 'r+b');
        $dumper->dump($cloner->cloneVar($this->getData()), $output);
        return stream_get_contents($output, -1, 0);
    }