code: @Override
      public void handleResponseFromServiceToHttpResponse(final Response<Object> response, final HttpRequest originatingRequest) {
  
          final String key = Str.add("" + originatingRequest.id(), "|", originatingRequest.returnAddress());
          this.outstandingRequestMap.remove(key);
  
  
          if (response.wasErrors()) {
              handleError(response, originatingRequest);
          } else {
              if (response.body() instanceof HttpResponse) {
                  writeHttpResponse(originatingRequest.getReceiver(), ((HttpResponse) response.body()));
              } else {
                  final RequestMetaData requestMetaData = metaDataProviderMap
                          .get(RequestMethod.valueOf(originatingRequest.getMethod())).get(originatingRequest.address());
  
                  final ServiceMethodMeta serviceMethodMeta = requestMetaData.getMethod();
                  final int responseCode = serviceMethodMeta.getResponseCode();
  
  
                  MultiMap<String, String> headers = response.headers();
  
                  if (requestMetaData.getRequest().hasResponseHeaders()) {
                      if (response.headers() == MultiMap.EMPTY) {
                          headers = new MultiMapImpl<>();
                      } else {
                          headers = response.headers();
                      }
                      headers.putAllCopyLists(requestMetaData.getRequest().getResponseHeaders());
                  }
  
                  writeResponse(originatingRequest.getReceiver(),
                          responseCode == -1 ? HttpStatus.OK : responseCode,
                          serviceMethodMeta.getContentType(),
                          jsonMapper.toJson(response.body()),
                          headers);
  
              }
          }
  
  
      }
docs: 2nd MOST IMPORTANT METHOD FOR DEBUGGING WHY SOMETHING IS NOT CALLED.