code: protected Error prepareError(int statusCode, RouteContext routeContext) {
          String messageKey = "pippo.statusCode" + statusCode;
  
          Error error = new Error();
          error.setStatusCode(statusCode);
          error.setStatusMessage(application.getMessages().get(messageKey, routeContext));
          error.setRequestMethod(routeContext.getRequestMethod());
          error.setRequestUri(routeContext.getRequestUri());
          error.setStacktrace(routeContext.getLocal(STACKTRACE));
          error.setMessage(routeContext.getLocal(MESSAGE));
  
          return error;
      }
docs: Prepares an Error instance for the error response.
  
  @param statusCode
  @param routeContext
  @return an Error