docs: public Observable<List<UUID>> addCustomPrebuiltDomainAsync(UUID appId, String versionId, AddCustomPrebuiltDomainModelsOptionalParameter addCustomPrebuiltDomainOptionalParameter) {
          return addCustomPrebuiltDomainWithServiceResponseAsync(appId, versionId, addCustomPrebuiltDomainOptionalParameter).map(new Func1<ServiceResponse<List<UUID>>, List<UUID>>() {
              @Override
              public List<UUID> call(ServiceResponse<List<UUID>> response) {
                  return response.body();
              }
          });
      }