public static void UseSdnugMiddleware(this IAppBuilder app, SdnugMiddlewareOptions options = null)
 {
     options = options ?? new SdnugMiddlewareOptions();
     app.Use<SdnugMiddlewareComponent>(options);
 }
 public SdnugMiddlewareComponent(AppFunc next, SdnugMiddlewareOptions options)
 {
     _next = next;
     _options = options;
 }