docs: public com.squareup.okhttp.Call getUniverseStructuresAsync(String datasource, String filter, String ifNoneMatch,
              final ApiCallback<List<Long>> callback) throws ApiException {
  
          com.squareup.okhttp.Call call = getUniverseStructuresValidateBeforeCall(datasource, filter, ifNoneMatch,
                  callback);
          Type localVarReturnType = new TypeToken<List<Long>>() {
          }.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }