docs: public Observable<PersistedFace> addPersonFaceFromStreamAsync(String personGroupId, UUID personId, byte[] image, AddPersonFaceFromStreamOptionalParameter addPersonFaceFromStreamOptionalParameter) {
          return addPersonFaceFromStreamWithServiceResponseAsync(personGroupId, personId, image, addPersonFaceFromStreamOptionalParameter).map(new Func1<ServiceResponse<PersistedFace>, PersistedFace>() {
              @Override
              public PersistedFace call(ServiceResponse<PersistedFace> response) {
                  return response.body();
              }
          });
      }