docs: public static ServiceInstance11 toServiceInstance11(ModelServiceInstance11 modelInstance){
          if (modelInstance==null) throw new NullPointerException();
          Map<String, String> meta = new HashMap<>();
          if (modelInstance.getMetadata() != null) {
              for (Entry<String, String> en : modelInstance.getMetadata()
                      .entrySet()) {
                  meta.put(en.getKey(), en.getValue());
              }
          }
          return new ServiceInstance11(modelInstance.getServiceName(),
                  modelInstance.getInstanceId(),
                  modelInstance.getUri(),
                  modelInstance.isMonitorEnabled(), modelInstance.getStatus(),
                  modelInstance.getAddress(), modelInstance.getPort(), meta);
      }