code: public UUID addClosedList(UUID appId, String versionId, ClosedListModelCreateObject closedListModelCreateObject) {
          return addClosedListWithServiceResponseAsync(appId, versionId, closedListModelCreateObject).toBlocking().single().body();
      }
docs: Adds a closed list model to the application.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param closedListModelCreateObject A model containing the name and words for the new closed list entity extractor.
  @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 UUID object if successful.