docs: public ModelServiceInstance getModelServiceInstanceByAddress(String serviceName, String instanceAddress) {
          ModelService service = getModelService(serviceName);
          if (service != null && service.getServiceInstances() != null) {
              for (ModelServiceInstance instance : service.getServiceInstances()) {
                  if (instance.getAddress().equals(instanceAddress)) {
                      return instance;
                  }
              }
          }
          return null;
      }