code: public com.squareup.okhttp.Call getFwStatsAsync(String datasource, String ifNoneMatch,
              final ApiCallback<List<FactionWarfareStatsResponse>> callback) throws ApiException {
  
          com.squareup.okhttp.Call call = getFwStatsValidateBeforeCall(datasource, ifNoneMatch, callback);
          Type localVarReturnType = new TypeToken<List<FactionWarfareStatsResponse>>() {
          }.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }
docs: An overview of statistics about factions involved in faction warfare
  (asynchronously) Statistical overviews of factions involved in faction
  warfare --- This route expires daily at 11:05
  
  @param datasource
  The server name you would like data from (optional, default to
  tranquility)
  @param ifNoneMatch
  ETag from a previous request. A 304 will be returned if this
  matches the current ETag (optional)
  @param callback
  The callback to be executed when the API call finishes
  @return The request call
  @throws ApiException
  If fail to process the API call, e.g. serializing the request
  body object