docs: public void updateServiceInstanceStatus(String serviceName, String instanceId, OperationalStatus status, final RegistrationCallback cb, Object context){
          ProtocolHeader header = new ProtocolHeader();
          header.setType(ProtocolType.UpdateServiceInstanceStatus);
  
          UpdateServiceInstanceStatusProtocol p = new UpdateServiceInstanceStatusProtocol(serviceName, instanceId, status);
  
          ProtocolCallback pcb = new ProtocolCallback(){
  
              @Override
              public void call(boolean result, Response response,
                      ErrorCode error, Object ctx) {
                  cb.call(result, error, ctx);
              }
  
          };
  
          connection.submitCallbackRequest(header, p, pcb, context);
      }