docs: public Observable<Terms> getAllTermsAsync(String listId, String language, GetAllTermsOptionalParameter getAllTermsOptionalParameter) {
          return getAllTermsWithServiceResponseAsync(listId, language, getAllTermsOptionalParameter).map(new Func1<ServiceResponse<Terms>, Terms>() {
              @Override
              public Terms call(ServiceResponse<Terms> response) {
                  return response.body();
              }
          });
      }