docs: public Observable<Integer> addExplicitListItemAsync(UUID appId, String versionId, UUID entityId, AddExplicitListItemOptionalParameter addExplicitListItemOptionalParameter) {
          return addExplicitListItemWithServiceResponseAsync(appId, versionId, entityId, addExplicitListItemOptionalParameter).map(new Func1<ServiceResponse<Integer>, Integer>() {
              @Override
              public Integer call(ServiceResponse<Integer> response) {
                  return response.body();
              }
          });
      }