code: public Observable<ServiceResponse<Tag>> getTagWithServiceResponseAsync(UUID projectId, UUID tagId, UUID iterationId) {
          if (projectId == null) {
              throw new IllegalArgumentException("Parameter projectId is required and cannot be null.");
          }
          if (tagId == null) {
              throw new IllegalArgumentException("Parameter tagId is required and cannot be null.");
          }
          if (this.client.apiKey() == null) {
              throw new IllegalArgumentException("Parameter this.client.apiKey() is required and cannot be null.");
          }
          return service.getTag(projectId, tagId, iterationId, this.client.apiKey(), this.client.acceptLanguage(), this.client.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Tag>>>() {
                  @Override
                  public Observable<ServiceResponse<Tag>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<Tag> clientResponse = getTagDelegate(response);
                          return Observable.just(clientResponse);
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }
docs: Get information about a specific tag.
  
  @param projectId The project this tag belongs to
  @param tagId The tag id
  @param iterationId The iteration to retrieve this tag from. Optional, defaults to current training set
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the Tag object