class VaadinServletService extends VaadinService {

    @Override
    public String resolveResource(String url) {
        Objects.requireNonNull(url, "Url cannot be null");

        return contextResolver.resolveVaadinUri(url);
    }

    public  VaadinServletService(VaadinServlet servlet,
            DeploymentConfiguration deploymentConfiguration);
    protected  VaadinServletService();

}