protected function replaceDefaultSymfonyLineDumpers()
    {
        HtmlDumper::$defaultOutput =
        CliDumper::$defaultOutput =
            function ($line, $depth, $indentPad) {
                if (-1 !== $depth) {
                    echo str_repeat($indentPad, $depth).$line.PHP_EOL;
                }
            };
    }