Global error handler

    HttpResponse<JsonError> error(HttpRequest request, Throwable e) {
        JsonError error = new JsonError("Bad Things Happened: " + e.getMessage()) (2)
                .link(Link.SELF, Link.of(request.getUri()))
        HttpResponse.<JsonError>serverError()
                .body(error) (3)

Global status handler

    @Error(status = HttpStatus.NOT_FOUND)
        JsonError error = new JsonError("Person Not Found") (2)
                .link(Link.SELF, Link.of(request.getUri()));
        return HttpResponse.<JsonError>notFound()
                .body(error); (3)

Global status handler

    @Error(status = HttpStatus.NOT_FOUND)
    fun notFound(request: HttpRequest<*>): HttpResponse<JsonError> { (1)
                .link(Link.SELF, Link.of(request.uri))
        return HttpResponse.notFound<JsonError>()
                .body(error) (3)