mybackend/lib/handlers/health_api.dart

import 'package:file_upload_processor/handlers/base_api.dart';
import 'package:shelf/shelf.dart' as shelf;

class HealthApi extends BaseApi {
  HealthApi(shelf.Request request) : super(request);
  @override
  response() async => shelf.Response.ok('Hello World: ${request.url}');
}