private void sendAsset(HttpResponse response, String requestUrl){
        try {
            File fi = new File("src/resources/assets" + requestUrl);
            byte[] fileContent = Files.readAllBytes(fi.toPath());
            response.setContent(fileContent);

            String[] splitUrl = requestUrl.split("\\.");
            String type = splitUrl[splitUrl.length - 1];
            response.addHeader("Content-Type", (String)WebConstants.HTTP_CONTENT_TYPES.get(type));
        }catch (IOException e){
            response.setStatusCode(404);
        }
    }