code: public OperationStatus updateHierarchicalEntity(UUID appId, String versionId, UUID hEntityId, HierarchicalEntityModel hierarchicalModelUpdateObject) {
          return updateHierarchicalEntityWithServiceResponseAsync(appId, versionId, hEntityId, hierarchicalModelUpdateObject).toBlocking().single().body();
      }
docs: Updates the name and children of a hierarchical entity model.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param hEntityId The hierarchical entity extractor ID.
  @param hierarchicalModelUpdateObject Model containing names of the children of the hierarchical entity.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws ErrorResponseException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the OperationStatus object if successful.