docs: public Observable<TaskAddCollectionResult> addCollectionAsync(String jobId, List<TaskAddParameter> value) {
          return addCollectionWithServiceResponseAsync(jobId, value).map(new Func1<ServiceResponseWithHeaders<TaskAddCollectionResult, TaskAddCollectionHeaders>, TaskAddCollectionResult>() {
              @Override
              public TaskAddCollectionResult call(ServiceResponseWithHeaders<TaskAddCollectionResult, TaskAddCollectionHeaders> response) {
                  return response.body();
              }
          });
      }