docs: public List<ModelServiceInstance> getUPModelInstancesByMetadataKey(String keyName) {
          List<ModelServiceInstance> list = new ArrayList<>();
          for (ModelServiceInstance instance : getModelInstancesByMetadataKey(keyName)) {
              if (instance.getStatus().equals(OperationalStatus.UP)) {
                  list.add(instance);
              }
          }
          return list;
      }