docs: public com.squareup.okhttp.Call getUniverseRacesAsync(String acceptLanguage, String datasource, String ifNoneMatch,
              String language, final ApiCallback<List<RacesResponse>> callback) throws ApiException {
  
          com.squareup.okhttp.Call call = getUniverseRacesValidateBeforeCall(acceptLanguage, datasource, ifNoneMatch,
                  language, callback);
          Type localVarReturnType = new TypeToken<List<RacesResponse>>() {
          }.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }